反应详情

A solution of 2.05 g (S)-2-Methyl-piperazine-1,4-dicarboxylic acid 4-tert-butyl ester 1-ethyl ester in 15 ml dichloromethane was treated with 11.2 ml TFA and the resulting solution stirred for 12 h. The solvents were removed in vacuum and the crude hydrotrifluoroacetate transformed to the free amine by treatment with (Polystyrylmethyl)trimethylammonium bicarbonate in MeCN. Yield: 1.70 g.

1. customThe solvents were removed in vacuum