反应详情

4-{[(4-tert-Butyl-phenyl)-(4-iodo-phenylcarbamoyl)-methyl]-amino}-benzoic acid tert-butyl ester (110 mg, 0.19 mmol) was dissolved in 2 mL of HOAc. paraformaldehyde (51 mg, 0.57 mmol) and sodium cyano-borohydride (36 mg, 0.57 mmol) were then added and heated to 40 C for 1 h. Cooled to RT, EtOAc (20 mL) was added and extracted water (20 mL). The organic layer was washed again with water (20 mL), dried over sodium sulfate, filtered and the organic layer was removed under reduced pressure to give a white solid (120 mg, 100%). 1H NMR showed the compound to be very clean and sufficient for the following step. LCMS (M+1=599.4)

1. temperatureheated to 40 C for 1 h
2. extractionextracted water (20 mL)
3. washThe organic layer was washed again with water (20 mL)
4. dry with materialdried over sodium sulfate
5. filtrationfiltered
6. customthe organic layer was removed under reduced pressure