Structure of 885126-34-1
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CAS No. : | 885126-34-1 |
Formula : | C15H12IN3OS |
M.W : | 409.24 |
SMILES Code : | CNC(=O)C1=C(SC2=CC=C3C(I)=NNC3=C2)C=CC=C1 |
MDL No. : | MFCD13183042 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319 |
Precautionary Statements: | P501-P270-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P312+P330 |
* 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.
Yield | Reaction Conditions | Operation 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). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
65% | Under nitrogen atmosphere 3 kg of 1 -methyl-2-pyrrolidone is mixed with 4.4 kg of 6- iodo-lH-indazole, 7.3 kg of potassium carbonate and 0.17 kg of Copper (II) acetate hydrate at 20-25C. The mixture is heated to 80C. 3.5 kg of 2-mercapto-N-methylbenzamide is mixed with 1.75 kg of l-methyl-2- pyrrolidone and the mixture is heated to 60C. The solution is added to the previously prepared solution of 6-iodo-lH-indazole at 80C in the course of 15 minutes. The mixture is then stirred at 105C for 90 minutes. Then a solution of 8.2 kg of iodine in 2.8 kg of l-methyl-2-pyrrolidone is added. The mixture is stirred at 105C for 120 minutes. Then it is cooled to 80C. 10.7 kg of acetonitrile is added. A mixture of 5 kg of ascorbic acid in 24 kg of water is added in the course of 120 minutes at 80C. Then 24 kg of water is added in the course of 80 minutes at 80C. The resulting mixture is cooled to 0-5C in the course of 4 hours. The mixture is filtered off. Under nitrogen atmosphere the obtained solid is mixed with 20 kg of acetone and 10 kg of water, the mixture is heated to 55-60C and stirred at this temperature for 1 hour. Then the mixture is cooled to 20 C, filtered and the filtered solid is washed with 3 kg of chilled acetone and dried to provide 2-((3-iodo-lH-indazol-6-yl)thio)-N-methylbenzamide in 65% yield and 99% purity (HPLC ES). |
Tags: 885126-34-1 synthesis path| 885126-34-1 SDS| 885126-34-1 COA| 885126-34-1 purity| 885126-34-1 application| 885126-34-1 NMR| 885126-34-1 COA| 885126-34-1 structure
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