反应详情

A procedure similar to that described in Preparation 7 was repeated, except that 0.46 g of sodium hydride (as a 55% w/w dispersion in mineral oil), 15 ml of dehydrated dimethylformamide, 0.66 ml of methyl iodide and a solution of 1.9 g of N-t-butoxycarbonyl-4-methoxy-2-nitroaniline (prepared as described in Preparation 22) in 15 ml of dehydrated dimethylformamide were used, to give 2.0 g of the title compound having an Rf value=0.34 (on thin layer chromatography on silica gel; developing solvent: a 1:5 by volume mixture of ethyl acetate and hexane).

1. customA procedure similar to that described in Preparation 7