反应详情

0.35 ml of 1-chloro-N,N,2-trimethylpropenylamine is added to a solution of 0.59 g of 1-(tert-butoxycarbonyl)indoline-3(R,S)carboxylic acid in methylene chloride at 0° C. After 30 min, 0.93 ml of triethylamine, 0.23 g of methylamine hydrochloride and 4-DMAP, as a catalyst, are added and the mixture is stirred at room temperature for 3 h. The reaction mixture is then chromatographed directly over 80 g of silica gel (mobile phase J). This gives the title compound: Rf (P)=0.65.

1. customThe reaction mixture is then chromatographed directly over 80 g of silica gel (mobile phase J)