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Structure of 100342-30-1

Chemical Structure| 100342-30-1

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Product Details of [ 100342-30-1 ]

CAS No. :100342-30-1
Formula : C8H13NO2S2
M.W : 219.32
SMILES Code : C(C)(C)(C)N[S](=O)(=O)C1=CC=CS1
MDL No. :MFCD02047252
InChI Key :CLKMBGGZGFULOO-UHFFFAOYSA-N
Pubchem ID :765814

Safety of [ 100342-30-1 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H319
Precautionary Statements:P305+P351+P338

Computational Chemistry of [ 100342-30-1 ] Show Less

Physicochemical Properties

Num. heavy atoms 13
Num. arom. heavy atoms 5
Fraction Csp3 0.5
Num. rotatable bonds 3
Num. H-bond acceptors 3.0
Num. H-bond donors 1.0
Molar Refractivity 54.67
TPSA ?

Topological Polar Surface Area: Calculated from
Ertl P. et al. 2000 J. Med. Chem.

82.79 Ų

Lipophilicity

Log Po/w (iLOGP)?

iLOGP: in-house physics-based method implemented from
Daina A et al. 2014 J. Chem. Inf. Model.

1.69
Log Po/w (XLOGP3)?

XLOGP3: Atomistic and knowledge-based method calculated by
XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry

1.09
Log Po/w (WLOGP)?

WLOGP: Atomistic method implemented from
Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.

2.91
Log Po/w (MLOGP)?

MLOGP: Topological method implemented from
Moriguchi I. et al. 1992 Chem. Pharm. Bull.
Moriguchi I. et al. 1994 Chem. Pharm. Bull.
Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.

0.62
Log Po/w (SILICOS-IT)?

SILICOS-IT: Hybrid fragmental/topological method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

1.7
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

1.6

Water Solubility

Log S (ESOL):?

ESOL: Topological method implemented from
Delaney JS. 2004 J. Chem. Inf. Model.

-1.97
Solubility 2.33 mg/ml ; 0.0106 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Very soluble
Log S (Ali)?

Ali: Topological method implemented from
Ali J. et al. 2012 J. Chem. Inf. Model.

-2.42
Solubility 0.832 mg/ml ; 0.00379 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble
Log S (SILICOS-IT)?

SILICOS-IT: Fragmental method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

-2.86
Solubility 0.302 mg/ml ; 0.00138 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble

Pharmacokinetics

GI absorption?

Gatrointestinal absorption: according to the white of the BOILED-Egg

High
BBB permeant?

BBB permeation: according to the yolk of the BOILED-Egg

No
P-gp substrate?

P-glycoprotein substrate: SVM model built on 1033 molecules (training set)
and tested on 415 molecules (test set)
10-fold CV: ACC=0.72 / AUC=0.77
External: ACC=0.88 / AUC=0.94

No
CYP1A2 inhibitor?

Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.83 / AUC=0.90
External: ACC=0.84 / AUC=0.91

No
CYP2C19 inhibitor?

Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.80 / AUC=0.86
External: ACC=0.80 / AUC=0.87

No
CYP2C9 inhibitor?

Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)
and tested on 2075 molecules (test set)
10-fold CV: ACC=0.78 / AUC=0.85
External: ACC=0.71 / AUC=0.81

No
CYP2D6 inhibitor?

Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)
and tested on 1068 molecules (test set)
10-fold CV: ACC=0.79 / AUC=0.85
External: ACC=0.81 / AUC=0.87

No
CYP3A4 inhibitor?

Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)
and tested on 2579 molecules (test set)
10-fold CV: ACC=0.77 / AUC=0.85
External: ACC=0.78 / AUC=0.86

No
Log Kp (skin permeation)?

Skin permeation: QSPR model implemented from
Potts RO and Guy RH. 1992 Pharm. Res.

-6.86 cm/s

Druglikeness

Lipinski?

Lipinski (Pfizer) filter: implemented from
Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev.
MW ≤ 500
MLOGP ≤ 4.15
N or O ≤ 10
NH or OH ≤ 5

0.0
Ghose?

Ghose filter: implemented from
Ghose AK. et al. 1999 J. Comb. Chem.
160 ≤ MW ≤ 480
-0.4 ≤ WLOGP ≤ 5.6
40 ≤ MR ≤ 130
20 ≤ atoms ≤ 70

None
Veber?

Veber (GSK) filter: implemented from
Veber DF. et al. 2002 J. Med. Chem.
Rotatable bonds ≤ 10
TPSA ≤ 140

0.0
Egan?

Egan (Pharmacia) filter: implemented from
Egan WJ. et al. 2000 J. Med. Chem.
WLOGP ≤ 5.88
TPSA ≤ 131.6

0.0
Muegge?

Muegge (Bayer) filter: implemented from
Muegge I. et al. 2001 J. Med. Chem.
200 ≤ MW ≤ 600
-2 ≤ XLOGP ≤ 5
TPSA ≤ 150
Num. rings ≤ 7
Num. carbon > 4
Num. heteroatoms > 1
Num. rotatable bonds ≤ 15
H-bond acc. ≤ 10
H-bond don. ≤ 5

0.0
Bioavailability Score?

Abbott Bioavailability Score: Probability of F > 10% in rat
implemented from
Martin YC. 2005 J. Med. Chem.

0.55

Medicinal Chemistry

PAINS?

Pan Assay Interference Structures: implemented from
Baell JB. & Holloway GA. 2010 J. Med. Chem.

0.0 alert
Brenk?

Structural Alert: implemented from
Brenk R. et al. 2008 ChemMedChem

0.0 alert: heavy_metal
Leadlikeness?

Leadlikeness: implemented from
Teague SJ. 1999 Angew. Chem. Int. Ed.
250 ≤ MW ≤ 350
XLOGP ≤ 3.5
Num. rotatable bonds ≤ 7

No; 1 violation:MW<1.0
Synthetic accessibility?

Synthetic accessibility score: from 1 (very easy) to 10 (very difficult)
based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties,
trained on 12'782'590 molecules and tested on 40 external molecules (r2 = 0.94)

2.84

Application In Synthesis of [ 100342-30-1 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 100342-30-1 ]

[ 100342-30-1 ] Synthesis Path-Downstream   1~24

  • 1
  • [ 500-22-1 ]
  • [ 100342-30-1 ]
  • [ 134286-91-2 ]
  • [ 134286-92-3 ]
  • 2
  • [ 630-18-2 ]
  • [ 100342-30-1 ]
  • 5-(2,2-Dimethyl-propionyl)-thiophene-2-sulfonic acid tert-butylamide [ No CAS ]
  • 4
  • [ 100342-30-1 ]
  • [ 104863-67-4 ]
  • 5-(2,2,2-Trifluoro-acetyl)-thiophene-2-sulfonic acid tert-butylamide [ No CAS ]
  • 5
  • [ 100342-30-1 ]
  • [ 134286-96-7 ]
  • [ 134286-94-5 ]
  • 6
  • [ 100342-30-1 ]
  • [ 134286-85-4 ]
  • [ 68848-05-5 ]
  • 7
  • [ 100342-30-1 ]
  • [ 814-49-3 ]
  • (5-tert-Butylsulfamoyl-thiophen-2-yl)-phosphonic acid diethyl ester [ No CAS ]
  • 8
  • [ 100342-30-1 ]
  • [ 874-90-8 ]
  • 5-(4-Methoxy-benzoyl)-thiophene-2-sulfonic acid tert-butylamide [ No CAS ]
  • 10
  • [ 100342-30-1 ]
  • [ 126-30-7 ]
  • 5-(5,5-dimethyl-[1,3,2]dioxaborinan-2-yl)-thiophene-2-sulfonic acid <i>tert</i>-butylamide [ No CAS ]
  • 11
  • [ 542-69-8 ]
  • [ 100342-30-1 ]
  • [ 146013-27-6 ]
YieldReaction ConditionsOperation in experiment
With n-butyllithium; In ethyl acetate; EXAMPLE 1 5-butyl-<strong>[100342-30-1]2-(N-t-butylaminosulfonyl)thiophene</strong> To a solution of <strong>[100342-30-1]2-(N-t-butylaminosulfonyl)thiophene</strong> (2.01 g, 9.18 mmol) in anhydrous THF (17 mL) cooled to -78 C. under N2 was added 2.5 M n-BuLi (10 mL, 2.7 equiv). After stirring at -78 C. for 30 min the bath temperature was raised to -40 C. and the mixture was stirred for an additional 2 hrs. To this mixure was added n-butyliodide (2.0 mL, 2 equiv) and the reaction was allowed to warm to room temperature. After stirring overnight the darkened reaction mixture was quenched with NH4 Cl soln and extracted with EtOAc. The organic was washed with brine and dried over anhydrous MgSO4 and concentrated in vacuo. The titled compound was purified by flash chromatography eluding with hex/EtOAc (15:1 to 7:1). Rf=0.32 (6:1 Hex/EtOAc).
  • 12
  • [ 100342-30-1 ]
  • [ 107-08-4 ]
  • N-tert-butyl-5-propylthiophene-2-sulfonamide [ No CAS ]
  • 13
  • [ 100342-30-1 ]
  • [ 874-98-6 ]
  • N-tert-butyl-5-(3-methoxy-benzyl)-thiophene-2-sulfonamide [ No CAS ]
  • 14
  • [ 16629-19-9 ]
  • [ 75-64-9 ]
  • [ 100342-30-1 ]
YieldReaction ConditionsOperation in experiment
5.62 g (94%) In tetrahydrofuran; Step A: N-(1,1-Dimethylethyl)-2-thiophenesulfonamide To a solution of t-butylamine (8.35 g, 0.114 mol) in dry tetrahydrofuran (THF) (20 mL) cooled to 0 C. was added dropwise 2-thiophenesulfonyl chloride (5.0 g, 27.4 mmol). After the addition was completed, the reaction mixture was warmed to ambient temperature and stirred overnight. The mixture was extracted with ethyl acetate (3*80 mL) and the combined extracts were washed with water, dried over molecular sieves and concentrated. The residue was chromatographed on (silica, eluding with 25% ethyl acetate-hexane) to yield 5.62 g (94%) of solid: mp 80-82 C.
5.62 g (94%) In tetrahydrofuran; Step A: N-(1,1-Dimethylethyl)-2-thiophenesulfonamide To a solution of t-butylamine (8.35 g, 0.114 mol) in dry tetrahydrofuran (THF) (20 mL) cooled to 0 C. was added dropwise 2-thiophenesulfonyl chloride (5.0 g, 27.4 mmol). After the addition was completed, the reaction mixture was warmed to ambient temperature and stirred overnight. The mixture was extracted with ethyl acetate (3*80 mL) and the combined extracts were washed with water, dried over molecular sieves and concentrated. The residue was chromatographed on silica, eluding with 25% ethyl acetate-hexane, to yield 5.62 g (94%) of solid: mp 80-82 C.
In chloroform; at 0 - 20℃; for 1.16667h;Heating / reflux; Thiophene-2-sulfonyl chloride (15 g, 0.082 mol) was dissolved in CHC13 (200 mL) under N2 atmosphere and then cooled to 0C. tert-Butylamine (25.9 mL, 0.246 mol) dissolved in CHC13 (50 mL) was then added dropwise to the reaction mixture. The reaction mixture was stirred for 1 h at room temperature and then at reflux for 10 min. Toluene (700 mL) was added and the organic phase was washed with water (3 x 50 mL), dried, and concentrated in vacuo. The sub-title product was used without further purification in the next step. IH NMR B (CDC13) : 7.60 (1H, dd, J= 1.3, 3.8 Hz), 7.53 (1H, dd, J= 1.3, 5.0 Hz), 7.02 (1H, dd, J = 5. 0,3. 8 Hz), 5.13 (1H, m), 1.24 (9H, m) 13C NMR B (CDC13) : 145.0, 131.7, 131.2, 127.0, 55.1, 29.9
In chloroform; at 0℃; for 1.16667h;Heating / reflux; Thiophene-2-sulfonyl chloride (15 g, 0.082 mol) was dissolved in CHC13 (200 mL) under N2 atmosphere and then cooled to 0C. TERT-BUTYLAMINE (25.9 mL, 0.246 mol) dissolved in CHC13 (50 ML) was then added dropwise to the reaction mixture. The reaction mixture was stirred for 1 hour at room temperature and then at reflux for 10 min. Toluene (700 mL) was added and the organic phase was washed with water (3 x 50 mL), dried, and concentrated in vacuo. The sub-title product was used without further purification in the next step. 1H NMR No.(CDCL3) : 7.60 (1H, dd, J= 1.3, 3.8 Hz), 7.53 (1H, dd, J= 1.3, 5.0 Hz), 7.02 (1H, dd, J = 5.0, 3.8 Hz), 5. 13- (1 H, m), 1.24 (9H, m) 13C NMR 6 (CDC13) : 145.0, 131.7, 131.2, 127.0, 55.1, 29.9
In chloroform; at 20℃; for 1.16667h;Heating / reflux; Thiophene-2-sulfonyl chloride (15 g, 0.082 mol) was dissolved in CHC13 (200 mL) under N2 atmosphere and then cooled to 0C. tert-Butylamine (25.9 mL, 0.246 mol) dissolved in CHC13 (50 ML) was then added dropwise to the reaction mixture. The reaction mixture was stirred for 1 h at room temperature and then at reflux for 10 min. Toluene (700 mL) was added and the organic phase was washed with water (3 x 50 mL), dried, and concentrated IFS vacuo. The sub-title product was used without further purification in the next step. LH NMR B (CDC13) : 7.60 (1H, dd, J= 1.3, 3.8 Hz), 7.53 (1H, dd, J= 1.3, 5.0 Hz), 7.02 (1H, dd, J = 5. 0,3. 8 HZ), 5.13 (1H, m), 1.24 (9H, m) 13C NMR 8 (CDC13) : 145.0, 131.7, 131.2, 127.0, 55.1, 29.9
In chloroform; at 0 - 20℃; for 1.16667h;Heating / reflux; Thiophene-2-sulfonyl chloride (15 g, 0.082 mol) was dissolved in CHC13 (200 mL) under N2 atmosphere and then cooled to 0oC. tert-Butylamine (25.9 ML9 0.246 mol) dissolved in CHC13 (50 mL) was then added dropwise to the reaction mixture. The reaction mixture was stirred for 1 h at room temperature and then at reflux for 10 min. Toluene (700 mL) was added and the organic phase was washed with water (3 x 50 mL), dried, and concentrated in vacuo. The sub-title product was used without further purification in the next step. 'H NMR (CDC13) 8 7.60 (1H, dd, J=1.3, 3.8 Hz), 7.53 (1H, dd, J=1.3, 5.0 Hz), 7.02 (1H, dd, J=5.0, 3. 8 Hz), 5.13 (1H, m), 1.24 (9H, M) 13C NMR (CDC13) 5 145.0, 131.7, 131.2, 127.0, 55.1, 29.9
In chloroform; at 0 - 20℃; for 1.16667h;Heating / reflux; (a) LambdaLfe7Y-Butylthiophene-2-sulfonamide; Thiophene-2-sulfonyl chloride (15 g, 0.082 mol) was dissolved in CHCl3 (200 mL) under N2 atmosphere and then cooled to 00C. tert-Butylamine (25.9 mL, 0.246 mol) dissolved in CHCl3 (50 mL) was then added' drop wise to the reaction mixture. The reaction mixture was stirred for 1 h at room temperature and then at reflux for 10 min. Toluene (700 mL) was added and the organic phase was washed with water (3 x 50 mL), dried, and concentrated in vacuo. The sub-title product was used without further purification in the next step.1H NMR delta (CDCl3): 7.60 (IH, dd, J=1.3, 3.8 Hz), 7.53 (IH, dd5 J=I .3, 5.0 Hz), 7.02 (IH, dd, J=5.0, 3.8 Hz), 5.13(1H, m), 1.24 (9H5 m). 13C NMR delta (CDCl3): 145.0, 131.7, 131.2, 127.0, 55.1, 29.9.
In chloroform; at 0 - 20℃; for 1.16667h;Heating / reflux; (a) N-fe7f-Butylthiopliene-2-sulfonamide;Thiophene-2-sulfonyl chloride (15 g, 0.082 mol) was dissolved in CHCl3 (200 mL) under N2 atmosphere and then cooled to 0C. fez-f-Butylamine (25.9 mL, 0.246 mol) dissolved in CHCl3 (50 mL) was then added dropwise to the reaction mixture. The reaction mixture was stirred for 1 h at room temperature and then at reflux for 10 min. Toluene (700 mL) was added and the organic phase was washed with water (3 x 50 mL), dried, and concentrated in vacuo. The sub-title product was used without further purification in the next step. 1H NMR (CDCl3) delta 7.60 (IH, dd, J=1.3, 3.8 Hz), 7.53 (IH, dd, J=1.3, 5.0 Hz), 7.02 (IH, dd, J=5.0, 3.8 Hz), 5.13 (IH, m), 1.24 (9H, m). 13C NMR (CDCl3) delta 145.0, 131.7, 131.2, 127.0, 55.1, 29.9.
In chloroform; at 0 - 20℃; for 1.16667h;Heating / reflux; (a) iV-fert-Butylthiophene-2-sulfonamide; Thiophene-2-sulfonyl chloride (15 g, 0.082 mol) was dissolved in CHCl3 (200 mL) under N2 atmosphere and then cooled to 0C. fe/Y-Butylamine (25.9 mL, 0.246 mol) dissolved in CHCl3 (50 mL) was then added dropwise to the reaction mixture. The reaction mixture was stirred for 1 h at room temperature and then at reflux for 10 min. Toluene (700 mL) was added and the organic phase was washed with water (3 x 50 mL), dried, and concentrated in vacuo. The sub-title product was used without further purification in the next step.1H NMR delta (CDCl3): 7.60 (IH, dd, J=I .3, 3.8 Hz)5 7.53 (IH, dd, J=1.3, 5.0 Hz), 7.02 (IH5 dd, J=5.0, 3.8 Hz)5 5.13(1H, m), 1.24 (9H5 m). 13C NMR delta (CDCl3): 145.0, 131.7, 131.2, 127.0, 55.1, 29.9.

  • 15
  • n-butyllithiumin hexane [ No CAS ]
  • [ 100342-30-1 ]
  • [ 2950-43-8 ]
  • [ 68848-05-5 ]
YieldReaction ConditionsOperation in experiment
1.25 g (61%) With sodium acetate trihydrate; In tetrahydrofuran; water; Step B: N-(1,1-Dimethylethyl)-2,5-thiophenedisulfonamide To a solution of the product from Step A (1.5 g, 6.85 mmol) in THF (10 mL) cooled to -60 C. was added n-butyllithiumin hexane (2.5 M, 6.0 mL, 15.1 mmol). The mixture was stirred for 15 min at -60 C. and for 30 min at -10 C. Sulfur dioxide gas was passed through the surface of the mixture for 10 min. The cooling bath was removed and the mixture was stirred for an additional 1 h. The volatiles were evaporated and the residue was dissolved in water (30 mL) and sodium acetate trihydrate (5.59 g, 41.1 mmol) was added. The mixture was cooled in an ice-water bath and hydroxylamine-0-sulfonic acid (2.71 g, 23.9 mmol) was added. The cooling bath was removed and the mixture was stirred for 2 h. The suspension was extracted with ethyl acetate (3*50 mL) and the combined extracts were washed with 5% sodium bicarbonate solution, brine and dried over molecular sieves. The solvent was evaporated and the residue was chromatographed on (silica, eluding with 40% ethyl acetate-hexane) to yield 1.25 g (61%) of a liquid which solidified on standing: mp 116-120 C.
  • 16
  • [ 100342-30-1 ]
  • [ 68848-05-5 ]
YieldReaction ConditionsOperation in experiment
1.25 g (61%) With n-butyllithium; sodium acetate trihydrate; hydroxylamine-O-sulfonic acid; In tetrahydrofuran; hexane; water; Step B: N-(1,1-Dimethylethyl)-2,5-thiophenedisulfonamide To a solution of the product from Step A (1.5 g, 6.85 mmol) in THF (10 mL) cooled to -60 C. was added n-butyllithium in hexane (2.5M, 6.0 mL, 15.1 mmol). The mixture was stirred for 15 min at -60 C. and for 30 min at -10 C. Sulfur dioxide gas was passed through the surface of the mixture for 10 min. The cooling bath was removed and the mixture was stirred for an additional 1 h. The volatiles were evaporated and the residue was dissolved in water (30 mL) and sodium acetate trihydrate (5.59 g, 41.1 mmol) was added. The mixture was cooled in an ice-water bath and hydroxylamine-O-sulfonic acid (2.71 g, 23.9 mmol) was added. The cooling bath was removed and the mixture was stirred for 2 h. The suspension was extracted with ethylacetate (3*50 mL) and the combined extracts were washed with 5% sodium bicarbonate solution, brine and dried over molecular sieves. The solvent was evaporated and the residue was chromatographed on silica eluding with 40% ethylacetatehexane, to yield 1.25 g (61%) of a liquid which solidified on standing: mp 116-120 C.
  • 17
  • [ 513-38-2 ]
  • [ 100342-30-1 ]
  • [ 146013-28-7 ]
YieldReaction ConditionsOperation in experiment
55% N-TERT-BUTYLTHIOPHENE-2-SULFONAMIDE (10 g, 0.046 mol; see step (a) above) was dissolved in THF (85 mL) under N2 and then cooled TO-78C. n-BuLi (1.6 M, 76.9 mL, 0.12 mol) was added via a syringe. The reaction mixture was stirred at-78C for 30 min. and then at-40C for 2 h. IODO-2- methylpropane (10.5 mL, 0.09 mol) was added dropwise to the reaction mixture. The reaction mixture was stirred overnight at room temperature. The reaction was quenched with NH4C1 (aq. ) and extracted with EtOAc. The combined organic phase was washed with brine and dried and concentrated in vacuo. The crude product was purified on column chromatography (hexanes: EtOAc (10: 1) ) to give the sub-title compound in 55% yield (7.0 g, 0.025 mol). 1H NMR 8 (CDC13) : 7.43 (1H, d, J= 3.6 Hz), 6.67 (1H, d, J= 3.8 Hz), 4.83 (1H, M), 2.67 (2H, d, J= 7 Hz), 1.88 (1H, M), 1.26 (9H, M), 0.93 (6H, J= 6.6 Hz). 13C NMR No.(CDCL3) : 145.0, 131.7, 131.2, 127.0, 55.1, 29.9
55% N-TERT-BUTYLTHIOPHENE-2-SULFONAMIDE (10 g, 0.046 mol; see step (a) above) was dissolved in THF (85 mL) under N2 and then cooled TO-78C. n-BuLi (1.6 M, 76.9 mL, 0.12 mol) was added via a syringe. The reaction mixture was stirred AT-78C for 30 min. and then AT-40C for 2 hours. IODO-2- METHYLPROPANE (10.5 mL, 0.09 mol) was added dropwise to the reaction mixture. The reaction mixture was stirred overnight at room temperature. The reaction was quenched with NILCL (aq. ) and extracted with EtOAc. The combined organic phase was washed with brine and dried and concentrated in vacuo. The crude product was purified on column chromatography (hexanes: EtOAc (10: 1) ) to give the sub-title compound in 55% yield (7.0 g, 0.025 mol). 'H NMR 8 (CDC13) : 7.43 (1H, d, J= 3.6 Hz), 6.67 (1H, d, J= 3.8 Hz), 4.83 (1H, m), 2.67 (2H, d, J = 7 Hz), 1. 88 (1H, m), 1.26 (9H, m), 0.93 (6H, J= 6.6 Hz). 13C NMR 8 (CDC13) : 145.0, 131.7, 131.2, 127.0, 55.1, 29.9
55% N-TERT-BUTYLTHIOPHENE-2-SULFONAMIDE (10 g, 0.046 mol, see step (a) above) was dissolved in THF (85 ML) under N2 and then cooled TO-78oC. n-BuLi (1.6 M, 76.9 ML, 0.12 mol) was added via a syringe. The reaction mixture was stirred at-78oC for 30 min. and then AT-40oC for 2 h. IODO-2- methylpropane (10.5 mL, 0.09 mol) was added dropwise to the reaction mixture. The reaction mixture was stirred overnight at room temperature. The reaction was quenched with NH4C1 (aq. ) and extracted with EtOAc. The combined organic phase was washed with brine and dried and concentrated in vacuo. The crude product was purified on column chromatography (hexanes: EtOAc (10: 1) ) to give the sub-title compound in 55% yield (7.0 g, 0.025 mol). H NMR (CDCl3) 8 7.43 (1H, d, J= 3.6 Hz), 6.67 (1H, d, J=3. 8 Hz), 4. 83 (1H, M), 2.67 (2H, d, J=7 Hz), 1. 88 (1H, M), 1.26 (9H, M), 0.93 (6H, J=6.6 HZ). 13C NMR (CDCl3) 6 145. 0, 131. 79 131. 2, 127.0, 55. 1,29. 9
  • 18
  • [ 89124-64-1 ]
  • [ 100342-30-1 ]
  • [ 146013-28-7 ]
YieldReaction ConditionsOperation in experiment
55% N-TERT-BUTYLTHIOPHENE-2-SULFONAMIDE (10 g, 0.046 mol; see step (a) above) was dissolved in THF (85 mL) under N2 AND then cooled TO-78C. n-BuLi (1.6 M, 76.9 mL, 0.12 mol) was added via a syringe. The reaction mixture was stirred at-78C for 30 min. and then AT-40C for 2 h. IODO-2- methylpropane (10.5 mL, 0.09 mol) was added dropwise to the reaction mixture. The reaction mixture was stirred overnight at room temperature. The reaction was quenched with NH4CL (aq. ) and extracted with EtOAc. The combined organic phase was washed with brine and dried and concentrated in vacuo. The crude product was purified on column chromatography (hexanes: EtOAc (10: 1) ) to give the sub-title compound in 55% yield (7.0 g, 0.025 mol). 'H NMR 5 (CDC13) : 7.43 (1H, d, J= 3.6 Hz), 6.67 (1H, d, J= 3.8 Hz), 4.83 (1H, m), 2.67 (2H, d, J= 7 Hz), 1.88 (1H, m), 1.26 (9H, m), 0.93 (6H, J= 6.6 Hz). 13C NMR 5 (CDC13) : 145.0, 131.7, 131.2, 127. 0, 55.1, 29.9
  • 19
  • [ 100342-30-1 ]
  • [ 163520-14-7 ]
  • 20
  • [ 100342-30-1 ]
  • [ 477775-35-2 ]
  • 21
  • [ 78-77-3 ]
  • [ 100342-30-1 ]
  • [ 146013-28-7 ]
  • 22
  • [ 100342-30-1 ]
  • 5-butyl-2-(N-t-butylaminosulfonyl)-thiophene-3-boric acid [ No CAS ]
  • 23
  • [ 100342-30-1 ]
  • [ 147214-19-5 ]
  • 24
  • [ 1873-88-7 ]
  • [ 100342-30-1 ]
  • C15H33NO4S2Si3 [ No CAS ]
 

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Technical Information

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