Dimethylformamide dimethyl acetal → HCID 87203411, compound

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Reaction Steps

A solution of N-(3-hydroxy-2-sulfamoyl-phenyl)-2,2-dimethyl-propionamide (15.2 g, 55.9 mmol) and N,N-dimethylformamide dimethylacetal (9.7 ml, 72.6 mmol) in DMF (65 ml) is stirred at 60° C. for 1 h. Volatiles are evaporated at reduced pressure. Chromatography of the residue (21.8 g) dissolved in dichloromethane (silica gel, hexanes/EtOAc=1:1) gives N-(2-{[1-dimethylamino-meth-(E)-ylidene]-sulfamoyl}-3-hydroxy-phenyl)-2,2-dimethyl-propionamide.

Provenance & Evidence