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CAS No. : | 874801-46-4 | MDL No. : | MFCD04973905 |
Formula : | C6H3BrCl2O2S | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | FSNCFUWFJZQPTR-UHFFFAOYSA-N |
M.W : | 289.96 | Pubchem ID : | 2756864 |
Synonyms : |
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Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P280-P305+P351+P338-P310 | UN#: | 1759 |
Hazard Statements: | H302-H312-H314-H332 | Packing Group: | Ⅲ |
GHS Pictogram: |
* 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 |
---|---|---|
58% | To a solution of <strong>[1235406-42-4]tert-butyl thiazol-4-ylcarbamate</strong> (26.50 g, 132.33 mmol) in THF (300 mL) at -78 C, under nitrogen, was added 1 M solution of lithium bis(trimethylsilyl)amide in THF (185 mL, 185 mmol) dropwise. The mixture was warmed to 0 C and stirred for 1 h. The mixture was added dropwise a solution of 4-bromo-3-chlorobenzenesulfonyl chloride (49.88 g, 172.03 mmol) in THF (200 mL) at -78 C. The resulting mixture was stirred at 20 C for 3 h and then quenched with saturated aqueous sodium bicarbonate (100 mL) and water (300 mE). The mixture was extracted with EtOAc (3 x 300 mL) and the combined organic layers were washed with brine (100 mL), dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated in vacuo. The resdiue was triturated with MeOH (200 mL) to give the title compound as a colorless solid (35.00 g, 58% yield).MS (ES+) m/z: 476.9 (M + 23). 1H NMR (300 MHz, CDCl3) (5 8.82 (d, J = 2.0 Hz, 1H), 8.25 (a, J = 4.0 Hz, 1H), 7.95-7.89 (m, 1H), 7.87-7.83 (m, 1H), 7.58 (d, J = 4.0 Hz, 1H), 1.38 (s, 9H). | |
58% | EXAMPLE 225 Synthesis of (f?)-4-((1 -benzyl-3-methylpyrrolidin-3-yl)amino)-3-chloro-//-(thiazol-4- yl)benzenesulfonamide formate To a mixture of te/f-butyl thiazol-4-ylcarbamate (26.5 g, 132.3 mmol) in anhydrous tetrahydrofuran (300 mL) was added a 1 M solution of lithium bis(trimethylsilyl)amide in tetrahydrofuran (185.3 mL, 185.3 mmol) at -78 C. The reaction mixture was allowed to warm to 0 C and stirred for 1 h. After cooling the reaction mixture to -78 C, a solution of 4-bromo-3-chlorobenzenesulfonyl chloride (49.88 g, 172.0 mmol) in anhydrous tetrahydrofuran (200 mL) was added to it. The reaction mixture was allowed to warm to ambient temperature, stirred for 3 h, and then quenched by addition of saturated sodium bicarbonate solution (100 mL). The mixture was diluted with water (300 mL) and extracted with ethyl acetate (3 chi 300 mL). The combined organic phase was washed with brine (100 mL), dried over anhydrous sodium sulfate, and filtered. Concentration of the filtrate in vacuo and trituration of the residue in methanol (200 mL) provided the title compound as a colorless solid (35.0 g, 58% yield): H NMR (400 MHz, CDCI3) 8.85-8.78 (d, J = 2.0 Hz, 1 H), 8.28-8.21 (d, J = 4.0 Hz, 1 H), 7.95-7.89 (m, 1 H), 7.87-7.83 (m, 1 H), 7.59-7.55 (d, J = 4.0 Hz, 1 H), 1.38 (s, 9H); MS (ES+) m/z 352.9 (M - 99), 354.9 (M - 99). |