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Chemical Structure| 319472-78-1 Chemical Structure| 319472-78-1
Chemical Structure| 319472-78-1

3,6-Diiodo-1H-indazole

CAS No.: 319472-78-1

4.5 *For Research Use Only !

Cat. No.: A138202 Purity: 95%

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Product Details of [ 319472-78-1 ]

CAS No. :319472-78-1
Formula : C7H4I2N2
M.W : 369.93
SMILES Code : IC1=CC2=C(C=C1)C(I)=NN2
MDL No. :MFCD07781613
InChI Key :XHVJIWVECAQYNF-UHFFFAOYSA-N
Pubchem ID :21877351

Safety of [ 319472-78-1 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302
Precautionary Statements:P280-P305+P351+P338

Calculated chemistry of [ 319472-78-1 ] 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 61.53
TPSA ?

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

28.68 Ų

Lipophilicity

Log Po/w (iLOGP)?

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

1.41
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

2.89
Log Po/w (WLOGP)?

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

2.77
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.

3.17
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

3.96
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

2.84

Water Solubility

Log S (ESOL):?

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

-4.56
Solubility 0.0102 mg/ml ; 0.0000276 mol/l
Class?

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

Moderately soluble
Log S (Ali)?

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

-3.15
Solubility 0.26 mg/ml ; 0.000704 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

-4.76
Solubility 0.00647 mg/ml ; 0.0000175 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.

-6.5 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<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)

2.14

Application In Synthesis of [ 319472-78-1 ]

* 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 [ 319472-78-1 ]

[ 319472-78-1 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 261953-36-0 ]
  • [ 319472-78-1 ]
YieldReaction ConditionsOperation in experiment
An aqueous solution of NaHSO3 was prepared by adding 13.6 g of solid NaHSO3 into 250 mL of Dl water with strong stirring. 6-iodoindazole (30.0 g), followed by DMF (60 mL) were added to a 500 mL three-neck flask that was fitted with a mechanical stirrer, a temperature probe, and a 100 mL dropping funnel. After the stirring had begun, the flask was immersed in an ice/water bath. After 30 mintues, KOH was added in one portion, and the resulting mixture was stirred for an additional 30 minutes. A solution of 54.3g of I2 in 55 mL of DMF (total volume was 71 mL) was added to the dropping funnel and the run-in started. After 30 minutes, 42 mL of the solution had been added to the reaction mixture. The addition was stopped and an aliquot sample was taken and analyzed with HPLC (TFASH method), which indicated that there was still 6-iodoindazole present. After an additional 10 mL of the iodine/DMF solution was added, the second aliquot sample showed that all the starting 6-iodoindazle was consumed. A solution of 13.6g of NaHSO3 in Dl water was added slowly to the reaction mixture. At this stage the dark solution became a yellow suspension. After stirring for one hour, the mixture was filtered and the cake was washed with 200 mL of water and 200 mL of hexanes. The cake was sucked dry and further dried in a vacuum oven (25 inch vacuum/60C) for 18 hours to afford 38.60 g of the final product as a tan solid. 1H NMR 300MHz, DMSO ppm: 7.96 (s, 1H), 7.46 (d, J=8.4 Hz, 1 H), 7.24 (d, J=8.4 Hz, 1H), 3.33 (s, 1 H).
With iodine; potassium hydroxide; In water; N,N-dimethyl-formamide;Cooling with ice; An aqueous solution of NaHSO 3 was prepared by adding 13.6 g of solid NaHSO 3 into 250 mL of DI water with strong stirring. 6 -iodoindazole (30.0 g), followed by DMF (60 mL) were added to a 500 mL three -neck flask that was fitted with a mechanical stirrer, a temperature probe, and a 100 mL dropping funnel. After the stirring had begun, the flask was immersed in an ice/water bath. After 30 mintues, KOH was added in one portion, and the resulting mixture was stirred for an additio nal 30 minutes. A solution of 54.3g of I 2 in 55 mL of DMF (total volume was 71 mL) was added to the dropping funnel and the run -in started. After 30 minutes, 42 mL of the solution had been added to the reaction mixture. The addition was stopped and an a liquot sample was taken and analyzed with HPLC (TFASH method), which indicated that there was still 6 -iodoindazole present. After an additional 10 mL of the iodine/DMF solution was added, the second aliquot sample showed that all the starting 6 - iodoindazle was consumed. A solution of 13.6g of NaHSO 3 in DI water was added slowly to the reaction mixture. At this stage the dark solution became a yellow suspension. After stirring for one hour, the mixture was filtered and the cake was washed with 200 mL of water and 200 mL of hexanes. The cake was sucked dry and further dried in a vacuum oven (25 inch vacuum/60C) for 18 hours to afford 38.60 g of the final product as a tan solid. 1H NMR 300MHz, DMSO ppm: 7.96 (s, 1H), 7.46 (d, J=8.4 Hz, 1H), 7.24 (d, J=8.4 Hz, 1H), 3.33 (s, 1H).
Example 3 Preparation of 3,6-diodoindazole An aqueous solution of NaHSO3 was prepared by adding 13.6 g of solid NaHSO3 into 250 mL of DI water with strong stirring. 6-iodoindazole (30.0 g), followed by DMF (60 mL) were added to a 500 mL three-neck flask that was fitted with a mechanical stirrer, a temperature probe, and a 100 mL dropping funnel. After the stirring had begun, the flask was immersed in an ice/water bath. After 30 mintues, KOH was added in one portion, and the resulting mixture was stirred for an additional 30 minutes. A solution of 54.3g of 12 in 55 mL of DMF (total volume was 71 mL) was added to the dropping funnel and the run-in started. After 30 minutes, 42 mL of the solution had been added to the reaction mixture. The addition was stopped and an aliquot sample was taken and analyzed with HPLC (TFASH method), which indicated that there was still 6-iodoindazole present. After an additional 10 mL of the iodine/DMF solution was added, the second aliquot sample showed that all the starting 6-iodoindazle was consumed. A solution of 13.6g of NaHSO3 in DI water was added slowly to the reaction mixture. At this stage the dark solution became a yellow suspension. After stirring for one hour, the mixture was filtered and the cake was washed with 200 mL of water and 200 mL of hexanes. The cake was sucked dry and further dried in a vacuum oven (25 inch vacuum/60 C.) for 18 hours to afford 38.60 g of the final productproduct as a tan solid. 1H NMR 300MHz, DMSO ppm: 7.96 (s, 1H), 7.46 (d, J=8.4 Hz, 1H), 7.24 (d, J=8.4 Hz, 1H), 3.33 (s, 1H).
  • 2
  • [ 319472-78-1 ]
  • [ 20054-45-9 ]
  • [ 885126-34-1 ]
YieldReaction ConditionsOperation in experiment
With cesium hydroxide; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene;tris-(dibenzylideneacetone)dipalladium(0); In N,N-dimethyl-formamide; at 70℃; for 0.5h; <strong>[319472-78-1]3,6-diiodoindazole</strong> (250.00 g), 2-mercapto-N-methylbenzamide (118.48 g), Pd2(dba)3 (9.28 g), Xantphos (11.73 g), DMF (2.5 L, 10 mL/g), followed by CsOH were added sequentially to a 5 L four-neck flask equipped with a mechanical stirrer and a temperature probe. The reaction mixture was then stirred. The dark mixture was degassed three times by alternately connecting to house vacuum and then nitrogen. The mixture was heated to 70 C over a period of 30 minutes and maintained at the same temperature for fours, at which time HPLC of the EPO <DP n="30"/>aliquot indicated that the <strong>[319472-78-1]3,6-diiodoindazole</strong> was less than 3%. After cooling, the mixture was poured into a mixture of 7.5 L of water, 1.25 L of toluene and 1.25 L of CH2CI2 in a 22 L extractor. The mixture was allowed to stir at ambient temperature overnight. A thick precipitate formed overnight. The mixture was filtered and the cake was sucked dry. The cake was further dried at 35 C under house vacuum for six hours to afford 216 g of the final product. The mother liquor was then extracted with 1.5 L of EtOAc. After partitioning, the aqueous layer was discarded. The organic layer was washed twice each with 2 L of water and concentrated. The residue was treated with 250 mL of CH2CI2 and stored overnight. A thick precipitate formed overnight. The mixture was filtered and the cake was sucked dry. The cake was dried at 35 0C under house vacuum overnight to afford 24.71 g of the final product. The combined yield was 241 g of the final product. The material showed satisfactory purity and was used in the next step without further purification. 1H NMR 300MHz, DMSO ppm: 13.53 (s, 1 H), 8.35 (q, J=4.7 Hz, 1 H), 7.56 (s, 1H), 7.51-7.40 (m, 2H), 7.36-7.23 (m, 3H), 7.13 (dd, J=8.5, 1.3 Hz, 1H), 7.06-7.01 (m, 1 H), 2.76 (d, J=4.7 Hz, 3H).
With cesium hydroxide; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene;tris-(dibenzylideneacetone)dipalladium(0); In N,N-dimethyl-formamide; at 20 - 70℃;Inert atmosphere; <strong>[319472-78-1]3,6-diiodoindazole</strong> (250.00 g), 2 -mercapto-N-methylbenzamid e (118.48 g), Pd 2(dba)3 (9.28 g), Xantphos (11.73 g), DMF (2.5 L, 10 mL/g), followed by CSOH were added sequentially to a 5 L four-neck flask equipped with a mechanical stirrer and a temperature probe. The reaction mixture was then stirred. The dark mixt ure was degassed three times by alternately connecting to house vacuum and then nitrogen. The mixture was heated to 70 C over a period of 30 minutes and maintained at the same temperature for fours, at which time HPLC of the aliquot indicated that the 3, 6-diiodoindazole was less than 3%. After cooling, the mixture was poured into a mixture of 7.5 L of water, 1.25 L of toluene and 1.25 L of CH2Cl2 in a 22 L extractor. The mixture was allowed to stir at ambient temperature overnight. A thick precipitate formed overnight. The mixture was filtered and the cake was sucked dry. The cake was further dried at 35 C under house vacuum for six hours to afford 216 g of the final productproduct. The mother liquor was then extracted with 1.5 L of EtOAc. After partition ing, the aqueous layer was discarded. The organic layer was washed twice each with 2 L of water and concentrated. The residue was treated with 250 mL of CH 2Cl2 and stored overnight. A thick precipitate formed overnight. The mixture was filtered and the cake was sucked dry. The cake was dried at 35 C under house vacuum overnight to afford 24.71 g of the final productproduct. The combined yield was 241 g of the final productproduct. The material showed satisfactory purity and was used in the next step without furth er purification. 1H NMR 300MHz, DMSO ppm: 13.53 (s, 1H), 8.35 (q, J=4.7 Hz, 1H), 7.56 (s, 1H), 7.51 - 7.40 (m, 2H), 7.36-7.23 (m, 3H), 7.13 (dd, J=8.5, 1.3 Hz, 1 H), 7.06 -7.01 (m, 1 H), 2.76 (d, J=4.7 Hz, 3H).
With cesium hydroxide;tris-(dibenzylideneacetone)dipalladium(0); 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; In N,N-dimethyl-formamide; at 70℃; for 4.5h;Product distribution / selectivity; Example 2 Preparation of 2-(3-Iodo-1H-indazol-6-ylsulfanyl)-N-methyl-benzamide <strong>[319472-78-1]3,6-diiodoindazole</strong> (250.00 g), 2-mercapto-N-methylbenzamide (118.48 g), Pd2(dba)3 (9.28 g), Xantphos (11.73 g), DMF (2.5 L, 10 mL/g), followed by CsOH were added sequentially to a 5 L four-neck flask equipped with a mechanical stirrer and a temperature probe. The reaction mixture was then stirred. The dark mixture was degassed three times by alternately connecting to house vacuum and then nitrogen. The mixture was heated to 70 C. over a period of 30 minutes and maintained at the same temperature for fours, at which time HPLC of the aliquot indicated that the <strong>[319472-78-1]3,6-diiodoindazole</strong> was less than 3%. After cooling, the mixture was poured into a mixture of 7.5 L of water, 1.25 L of toluene and 1.25 L of CH2Cl2 in a 22 L extractor. The mixture was allowed to stir at ambient temperature overnight. A thick precipitate formed overnight. The mixture was filtered and the cake was sucked dry. The cake was further dried at 35 C. under house vacuum for six hours to afford 216 g of the final productproduct. The mother liquor was then extracted with 1.5 L of EtOAc. After partitioning, the aqueous layer was discarded. The organic layer was washed twice each with 2 L of water and concentrated. The residue was treated with 250 mL of CH2Cl2 and stored overnight. A thick precipitate formed overnight. The mixture was filtered and the cake was sucked dry. The cake was dried at 35 C. under house vacuum overnight to afford 24.71 g of the final productproduct. The combined yield was 241 g of the final productproduct. The material showed satisfactory purity and was used in the next step without further purification. 1H NMR 300 MHz, DMSO ppm: 13.53 (s, 1H), 8.35 (q, J=4.7 Hz, 1H), 7.56 (s, 1H), 7.51-7.40 (m, 2H), 7.36-7.23 (m, 3H), 7.13 (dd, J=8.5, 1.3 Hz, 1H), 7.06-7.01 (m, 1H), 2.76 (d, J=4.7 Hz, 3H).
 

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