反应详情

To a solution of N-(4-chlorophenyl)-2-[((5-hydroxymethyl-3-chlorothiophen-2-yl)carbonyl)amino]-5-chlorobenzamide (0.085 g, 0.19 mmol) in DMF (6 mL) was added pyridinium dichromate (PDC) (0.25 g, 0.65 mmol) at ambient temperature. After stirring for 20 hours, water was added and the reaction mixture was extracted with methylene chloride. The combined extracts were dried over Na2SO4, filtered, concentrated in vacuo, and purified by flash chromatography on silica to afford 0.035 g of N-(4-chlorophenyl)-2-[((5-formyl-3-chlorothiophen-2-yl)carbonyl)amino]-5-chlorobenzamide, as a pale yellow solid; NMR (DMSO-d6) 11.3 (s, 1), 10.8(s, 1), 9.9 (s, 1),8.3 (d, 1), 8.1 (s, 1), 7.9 (s, 1), 7.7 (d, 2), 7.6 (d, 1), 7.4 (d, 2) ppm.

1. extractionthe reaction mixture was extracted with methylene chloride
2. dry with materialThe combined extracts were dried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated in vacuo
5. custompurified by flash chromatography on silica