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Chemical Structure| 37687-57-3 Chemical Structure| 37687-57-3

Structure of 37687-57-3

Chemical Structure| 37687-57-3

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Product Details of [ 37687-57-3 ]

CAS No. :37687-57-3
Formula : C8H7ClO3
M.W : 186.59
SMILES Code : COC1=C(O)C(Cl)=C(C=O)C=C1
MDL No. :MFCD03425852
Boiling Point : No data available
InChI Key :DTMJGFBJQBQOIA-UHFFFAOYSA-N
Pubchem ID :603956

Safety of [ 37687-57-3 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Computational Chemistry of [ 37687-57-3 ] Show Less

Physicochemical Properties

Num. heavy atoms 12
Num. arom. heavy atoms 6
Fraction Csp3 0.12
Num. rotatable bonds 2
Num. H-bond acceptors 3.0
Num. H-bond donors 1.0
Molar Refractivity 45.35
TPSA ?

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

46.53 Ų

Lipophilicity

Log Po/w (iLOGP)?

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

1.68
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

1.45
Log Po/w (WLOGP)?

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

1.87
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.

1.09
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

2.14
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

1.65

Water Solubility

Log S (ESOL):?

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

-2.15
Solubility 1.33 mg/ml ; 0.00711 mol/l
Class?

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

Soluble
Log S (Ali)?

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

-2.03
Solubility 1.73 mg/ml ; 0.00927 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

-2.52
Solubility 0.569 mg/ml ; 0.00305 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

Yes
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.

-6.41 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

1.0
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

1.0 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)

1.5

Application In Synthesis of [ 37687-57-3 ]

* 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 [ 37687-57-3 ]

[ 37687-57-3 ] Synthesis Path-Downstream   1~5

  • 1
  • [ 5417-17-4 ]
  • [ 37687-57-3 ]
  • 2
  • [ 37687-57-3 ]
  • [ 77-78-1 ]
  • [ 5417-17-4 ]
  • 3
  • [ 37687-57-3 ]
  • [ 74-88-4 ]
  • [ 5417-17-4 ]
YieldReaction ConditionsOperation in experiment
92% With tetra(n-butyl)ammonium hydrogensulfate; sodium hydroxide; In dichloromethane; at 20℃; for 12h; General procedure: Following an adaptation of the procedure of McKillop et al.7, anaqueous solution of 1.20 g of NaOH (30 mmol, 3.0 eq.) in 50 mL of deionized water was added to astirring solution of 2.31 g (10 mmol) of 2-bromo-isovanillin (2-bromo-3-hydroxy-4-methoxybenzaldehyde)in 50 mL of dichloromethane. Next, phase transfer catalyst was added, as 3.40 g of eithertetrabutylammonium hydrogen sulfate (TBAHS, 10.0 mmol, 1.0 eq.) or recycled catalyst (assuming thatthe recovered catalyst is tetrabutylammonium hydroxide, 2.6 g is 10 mmol, 1.0 eq). Once dissolved, 17g (120 mmol, 12 eq.) of methyl iodide was then added to the mixture and the reaction was allowed tostir at room temperature. Reaction progress was monitored by HPLC. As monitored by HPLC, reactionprogress generally showed complete turnover to product with no side products by 3 hours, however thesolution was typically allowed to stir overnight for convenience. The reaction mixture was extracted with3 x 50 mL portions of CH2Cl2. The combined organic extracts were washed with brine and deionizedwater, dried over MgSO4, filtered, and concentrated by evaporation under reduced pressure to yield aeither a white or yellow solid. To remove catalyst, the solid was first ground to a fine powder with amortar and pestle. This solid was poured on top of a 2 ? 3 cm layer of dry silica gel in a 3 ? 4 cm (I.D.)sintered glass fritted Buchner funnel. The solid was extracted with 1:5 ethyl acetate:hexanes in 75 mLportions by pouring the solvent mixture over the dry solids with vacuum suction to collect the solutionin a round bottom flask. Allow the solids to dry between solvent portions for best separation. The first1250 mL typically contained 85 - 95percent of pure product. The combined eluent was evaporated to drynessunder reduced pressure to afford a dense, white, flakey solid (2.06 g, 90percent). If the product was found tocontain non-halogenated contaminants from the previous step, pure halogenated product was easilyobtained by recrystallization from hexanes. The phase transfer catalyst, presumably a mixture oftetrabutylammonium salts, was recovered by either scooping it out of the filter or by eluting with ethylacetate.
8.5 g (42 mmol, 98%) With potassium carbonate; In acetonitrile; Step 2--Formation of 2-Chloro-3,4-dimethoxybenzaldehyde To 8.03 g (43 mmol) of 2-Chloro-3-hydroxy-4-methoxybenzaldehyde in 100 mL of acetonitrile was added 7.7 g (55 mmol) of powdered potassium carbonate followed by 8.3 mL (0.13 mol) of iodomethane. The reaction was slowly warmed to reflux where it was stirred for 24 h. After cooling to room temperature the suspension was filtered and the filtrate evaporated to dryness in vacuo to give 8.5 g (42 mmol, 98percent) of a white solid shown to be desired product by 1 H NMR.
  • 4
  • CH3 I [ No CAS ]
  • [ 37687-57-3 ]
  • [ 584-08-7 ]
  • [ 5417-17-4 ]
YieldReaction ConditionsOperation in experiment
189.49 g (96%) With sodium hydroxide; In chloroform; water; acetonitrile; Step 2 Synthesis of 2-chloro-3,4-dimethoxybenzaldehyde 184 g (0.986 mol) of 2-chloro-3-hydroxy-4-methoxybenzaldehyde was dissolved in 2 l of CH3 CN. 204 g (1.476 mol) of K2 CO3 and 298 g (2.096 mol) of CH3 I were added to the solution, which was heated under reflux for 4 hours. After cooling, the crystals were separated by filtration and the mother liquor was concentrated under reduced pressure. 800 ml of water and 600 ml of CHCl3 were added to the residue to conduct extraction. The CHCl3 layer was washed with 500 ml of 10percent NaOH and a saturated Nacl aqueous solution. It was dehydrated over MgSO4 and concentrated to dryness under reduced pressure to obtain 189.49 g (96percent) of 2-chloro-3,4-dimethoxybenzaldehyde. mp 70°~72° C. NMR (90 MHz, CDCl3) delta:3.88 (3H, s), 3.96 (3H, s), 6.92 (1H, d), 7.72 (1H, d), 10.28 (1H, s)
  • 5
  • [ 621-59-0 ]
  • [ 37687-57-3 ]
  • [ 5417-17-4 ]
YieldReaction ConditionsOperation in experiment
In N-methyl-acetamide; tetrachloromethane; ethanol; acetonitrile; EXAMPLE 1 Chlorine (25.6 g, 0.362 mole) was bubbled into a slurry of isovanillin (50.0 g, 0.328 mole) in 500 ml of carbon tetrachloride over a period of 25 minutes while maintaining an internal temperature of 15°-20°. Upon completion of the chlorine addition the slurry was stirred for 1 hour at room temperature; the precipitate filtered, washed with carbon tetrachloride and dried to 57.8 g (94.5percent crude yield), mp: 181°-196°. Recrystallization of 34.5 g of the crude produce from 600 ml of ethanol gave 17.3 g of white fibrous crystals, mp: 199°-203°; concentrating the mother liquors yielded a second crop of 6.3 g, mp: 196-202.5 (68percent recovery for two crops). Recrystallization of 11.4 g of crude 2-chloroisovanillin from 170 ml of acetonitrile afforded 7.4 g, mp: 200°-204.5° (65percent recovery for one crop). This compound (189.3 g) was methylated using dimethylformamide solution with potassium carbonate and dimethylsulfate to give 2-chloro-3,4-dimethoxybenzaldehyde, m.p. 69°-70°.
 

Historical Records

Technical Information

• Acidity of Phenols • Alkyl Halide Occurrence • Barbier Coupling Reaction • Baylis-Hillman Reaction • Benzylic Oxidation • Birch Reduction • Blanc Chloromethylation • Bucherer-Bergs Reaction • Chan-Lam Coupling Reaction • Clemmensen Reduction • Complex Metal Hydride Reductions • Corey-Chaykovsky Reaction • Corey-Fuchs Reaction • Electrophilic Substitution of the Phenol Aromatic Ring • Etherification Reaction of Phenolic Hydroxyl Group • Fischer Indole Synthesis • Friedel-Crafts Reaction • General Reactivity • Grignard Reaction • Halogenation of Phenols • Hantzsch Dihydropyridine Synthesis • Henry Nitroaldol Reaction • Hiyama Cross-Coupling Reaction • Horner-Wadsworth-Emmons Reaction • Hydride Reductions • Hydrogenolysis of Benzyl Ether • Julia-Kocienski Olefination • Kinetics of Alkyl Halides • Knoevenagel Condensation • Kumada Cross-Coupling Reaction • Leuckart-Wallach Reaction • McMurry Coupling • Meerwein-Ponndorf-Verley Reduction • Mukaiyama Aldol Reaction • Nomenclature of Ethers • Nozaki-Hiyama-Kishi Reaction • Oxidation of Phenols • Passerini Reaction • Paternò-Büchi Reaction • Pechmann Coumarin Synthesis • Petasis Reaction • Pictet-Spengler Tetrahydroisoquinoline Synthesis • Preparation of Aldehydes and Ketones • Preparation of Alkylbenzene • Preparation of Amines • Preparation of Ethers • Prins Reaction • Reactions of Aldehydes and Ketones • Reactions of Alkyl Halides with Reducing Metals • Reactions of Amines • Reactions of Benzene and Substituted Benzenes • Reactions of Ethers • Reformatsky Reaction • Reimer-Tiemann Reaction • Schlosser Modification of the Wittig Reaction • Schmidt Reaction • Stetter Reaction • Stille Coupling • Stobbe Condensation • Substitution and Elimination Reactions of Alkyl Halides • Suzuki Coupling • Tebbe Olefination • Ugi Reaction • Vilsmeier-Haack Reaction • Wittig Reaction • Wolff-Kishner Reduction

Categories

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