351456-45-6|5-Chloro-3-iodo-1H-indazole| Ambeed

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Quality Control of [ 351456-45-6 ] Purity: 96% SDS Specification

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Product Details of [ 351456-45-6 ]

CAS No. :	351456-45-6
Formula :	C₇H₄ClIN₂
M.W :	278.48
SMILES Code :	ClC2=CC=C1[NH]N=C(C1=C2)I
MDL No. :	MFCD06739146
InChI Key :	ZPFBQBOZEDHSGM-UHFFFAOYSA-N
Pubchem ID :	22352410

Safety of [ 351456-45-6 ]

GHS Pictogram:
Signal Word:	Warning
Hazard Statements:	H302-H315-H319-H335
Precautionary Statements:	P261-P305+P351+P338

Computational Chemistry of [ 351456-45-6 ] Show Less

Physicochemical Properties

Num. heavy atoms	11
Num. arom. heavy atoms	9
Fraction Csp3	0.0
Num. rotatable bonds	0
Num. H-bond acceptors	1.0
Num. H-bond donors	1.0
Molar Refractivity	53.82
TPSA ? Topological Polar Surface Area: Calculated from Ertl P. et al. 2000 J. Med. Chem.	28.68 Å²

Lipophilicity

Log P_o/w (iLOGP)? iLOGP: in-house physics-based method implemented from Daina A et al. 2014 J. Chem. Inf. Model.	1.54
Log P_o/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry	2.87
Log P_o/w (WLOGP)? WLOGP: Atomistic method implemented from Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.	2.82
Log P_o/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.	2.88
Log P_o/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	3.63
Consensus Log P_o/w? Consensus Log P_o/w: Average of all five predictions	2.75

Water Solubility

Log S (ESOL):? ESOL: Topological method implemented from Delaney JS. 2004 J. Chem. Inf. Model.	-3.98
Solubility	0.0292 mg/ml ; 0.000105 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.	-3.13
Solubility	0.206 mg/ml ; 0.000738 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	-4.47
Solubility	0.00933 mg/ml ; 0.0000335 mol/l
Class? Solubility class: Log S scale Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly	Moderately 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	Yes
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.	-5.96 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	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<0.0
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)	2.1

Application In Synthesis of [ 351456-45-6 ]

* 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 [ 351456-45-6 ]

[ 351456-45-6 ] Synthesis Path-Downstream 1~21

1
[ 351456-45-6 ]
[ 76513-69-4 ]
[ 351456-46-7 ]

Yield	Reaction Conditions	Operation in experiment
	In tetrahydrofuran; ethyl acetate;	(b) Intermediate 1b-5-Chloro-3-iodo-1-[2-(trimethylsilanyl)-ethoxymethyl]-1H-indazole: <strong>[351456-45-6]5-Chloro-3-iodo-1H-indazole</strong> 1a (8.86 g, 31.8 mmol) was dissolved in THF (100 mL) and cooled in an ice-salt bath to 0 C. Solid sodium t-butoxide (3.67 g, 38.2 mmol) was added, and the mixture stirred at 0 C. for 1 hour. 2-(Trimethylsilyl)ethoxymethyl chloride (7.96 g, 38.2 mmol) was then added, and stirring continued at 0 C. for 1 hour more. The solution was diluted with ethyl acetate (200 mL), washed with water (100 mL), and brine (100 mL). The organic layer was dried over magnesium sulfate, filtered, and concentrated. Silica gel chromatography (5 to 20% ethyl acetate in hexanes) afforded 1b (9.75 g, 75%) as a yellow oil: Rf=0.39 (5% ethyl acetate/hexanes); 1H NMR (CDCl3) delta 0.06 (s, 9H), 0.87 (t, 2H, J=8.1 Hz), 3.55 (t, 2H, J=8.1 Hz), 5.70 (s, 2H), 7.43 (dd, 1H, J=8.9,1.7 Hz), 7.49 (m, 2H). Anal. (C13H18C11N2OSi) C, H, N.

References: [1]Patent: US2002/161022,2002,A1 .

2
sodium thiosulfate [ No CAS ]
[ 77-92-9 ]
[ 351456-45-6 ]

Yield	Reaction Conditions	Operation in experiment
	With sodium hydroxide; In ethyl acetate;	3 M Aqueous NaOH (400 mL) and iodine flakes (35.3 g, 139 mmol) were added to the solution. After stirring at room temperature for 2 hours, the reaction mixture was neutralized to pH=6 with 20% aqueous citric acid, causing the dark color to change to light green. Saturated aqueous sodium thiosulfate (~400 mL) was added to the solution, causing the color to change from green to yellow, and the solution extracted with ethyl acetate (3*1000 mL). The combined organic extracts were dried over sodium sulfate, suction filtered through a coarse frit, and concentrated to a green sludge which was then redissolved in ethyl acetate (500 mL), filtered through a Celite pad, and concentrated to a green solid. Purification by silica gel chromatography (25% ethyl acetate in hexanes) yielded 5-Chloro-3-iodo-1H-indazole 1a (14.18 g, 44% from 5-amino-1H-indazole) as an off-white solid: mp=198-199 C.; Rf=0.53 (50% ethyl acetate/hexanes); 1H NMR (DMSO-d6) delta 7.44 (m, 2H), 7.60 (d, 1H, J=8.7 Hz), 13.68 (s, 1H). Anal. (C7H4C11N2) C, H, N.

References: [1]Patent: US2002/161022,2002,A1 .

3
[ 698-26-0 ]
[ 351456-45-6 ]

Yield	Reaction Conditions	Operation in experiment
90%	With iodine; potassium hydroxide; In N,N-dimethyl-formamide; at 20℃; for 3h;	General procedure: 3-Iodoindazoles were obtained by direct iodination of commercial indazoles by the method previously described by Bocchi [28] with slight modifications. A solution of 1H-indazole (3 g, 25.4 mmol), iodine (12.7 g, 50.03 mmol) and potassium hydroxide (5.34 g, 95.25 mmol)in DMF (7 mL) was stirred for 3 h at room temperature. The reaction was quenched by dilution with saturated solution of sodium bisulfite (150 mL) and a precipitated was formed. The precipitated was filtered over vacuum and washed with water (3 × 30 mL). The solid was left to dry at 30 C in a vacuum oven overnight obtaining 6.17 g of a pale yellow solid. Yield: 100%; m.p.: 136-138 C (lit.:[36] 134-136 C); IR (KBr) nu (cm-1): 3086 (NH); 424 (C-I). 1H-NMR delta (ppm): 13.50 (1H, s, H-1); 7.55(1H, d, J = 8.6 Hz, H-7); 7.45-7.40 (2H, m, H-6 and H-4); 7.19 (1H, dd, J = 7.5 Hz, H-5). 13C-NMR delta(ppm): 140.41; 127.22; 126.79; 121.23; 120.39; 110.51; 93.49; HRMS calculated for C7H5IN2: 243.9497,Found: 243.9499.3-Iodo-1H-indazole (1a). 3-Iodoindazoles were obtained by direct iodination of commercial indazoles by the method previously described by Bocchi [28] with slight modifications. A solution of 1H-indazole(3 g, 25.4 mmol), iodine (12.7 g, 50.03 mmol) and potassium hydroxide (5.34 g, 95.25 mmol) in DMF(7 mL) was stirred for 3 h at room temperature. The reaction was quenched by dilution with saturated solution of sodium bisulfite (150 mL) and a precipitated was formed. The precipitated was filtered over vacuum and washed with water (3 30 mL). The solid was left to dry at 30 C in a vacuum oven overnight obtaining 6.17 g of a pale yellow solid. Yield: 100%; m.p.: 136-138 C (lit.: [36] 134-136 C)
85.3%	With iodine; potassium hydroxide; In N,N-dimethyl-formamide; at 20℃;	To a mixture of 5-chloro-1H-indazole(2.0 g, 13.1 mmol, 1.0 eq.), KOH (2.4 g,45.8 mmol) in DMF was added ?2 (6.6 g, 26.1 mmol, 2.0 eq.). The mixture was stirred at rt overnight, then quenched by aqueous Na2S2O4 solution. The mixture was extracted with EtOAc (2 x 50 mL). The combined organic layers were dried over anhydrous Na2SO4 and concentrated. The residue was purified by column chromatography (PE/EA =10:1) to provide 5-chloro-3 -iodo- 1H-indazole (3.1 g, 85.3%).
85.3%	With iodine; potassium hydroxide; In N,N-dimethyl-formamide; at 20℃;	To a mixture of 5-chloro-lH-indazole (2.0 g, 13.1 mmol, 1.0 eq.), KOH (2.4 g, 45.8 mmol) in DMF was added I2 (6.6 g, 26.1 mmol, 2.0 eq.). The mixture was stirred at r.t. overnight, then quenched by aqueous Na2S204 solution. The mixture was extracted with EtOAc (2 x 50 mL). The combined organic layers were dried over anhydrous Na2S04 and concentrated. The residue was purified by column chromatography (PE/EA =10: 1) to provide 5-chloro-3-iodo-lH-indazole (3.1 g, 85.3%).

References: [1]Molecules,2018,vol. 23.
[2]Patent: WO2017/98328,2017,A2 .Location in patent: Paragraph 00208.
[3]Patent: WO2018/229543,2018,A2 .Location in patent: Paragraph 00178.
[4]Bioorganic and Medicinal Chemistry Letters,2013,vol. 23,p. 2793 - 2800.

Yield	Reaction Conditions	Operation in experiment
97%	With iodine; sodium hydroxide; In methanol; at 20℃; for 48h;	General procedure: 3-lodo-1H-indazole Iodine (5.8 g, 22.9 mmol) was added in portions over approximately 20 min to a solution of indazole (2.5 g, 21.7 mmol) in methanol (63 ml) and 2N sodium hydroxide solution (65 ml). The mixture remained colourless and a white precipitate slowly formed. The mixture was stirred at room temperature 48 h. The mixture was cooled in an ice-bath and 7.5 ml of concentrated hydrochloric acid was slowly added. The mixture was further acidified with 2N hydrochloric acid. 20% w/v Sodium thiosulfate pentahydrate solution was added until the iodine colour disappeared. The precipitate was filtered, washed with water and dried in the oven at 50 ºC to constant weight. The solid was taken up in methanol, filtered and the filtrated was evaporated under reduced pressure to give 5.0 g (20.6 mmol, 95%) of the title compound as a white solid. Purity 100%.1H NMR (300 MHz, CHLOROFORM-d) delta ppm 7.43-7.59 (m, 3H), 7.21-7.26 (m, 1H).UPLC/MS (3 min) retention time 1.56 min.LRMS: m/z 245 (M+1).
97%	With iodine; sodium hydroxide; In methanol; at 20℃; for 48h;	General procedure: Iodine (5.8 g, 22.9 mmol) was added in portions over approximately 20 min to a solution of indazole (2.5 g, 21 .7 mmol) in methanol (63 ml) and 2N sodium hydroxide solution (65 ml). The mixture remained colourless and a white precipitate slowly formed. The mixture was stirred at room temperature 48 h. The mixture was cooled in an ice-bath and 7.5 ml of concentrated hydrochloric acid was slowly added. The mixture was further acidified with 2N hydrochloric acid. 20% w/v Sodium thiosulfate pentahydrate solution was added until the iodine colour disappeared. The precipitate was filtered, washed with water and dried in the oven at 50 C to constant weight. The solid was taken up in methanol, filtered and the filtrated was evaporated under reduced pressure to give 5.0 g (20.6 mmol, 95%) of the title compound as a white solid. Purity 100%. 1 H NMR (300 MHz, CHLOROFORM-d) delta ppm 7.43-7.59 (m, 3H), 7.21 -7.26 (m, 1 H). UPLC/MS (3 min) retention time 1 .56 min. LRMS: m/z 245 (M+1 ).

5
[ 351456-45-6 ]
C₂₃H₂₀ClN₇O₂ [ No CAS ]