Trifluoroacetic acid → (S)-Hexahydro-pyrrolo[1,2-A]pyrazin-1-one

Participants

Reaction Steps

To a solution of methyl 1-[2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)ethyl]-L-prolinate (D75, 1 g) in dichloromethane (20 ml) was added at r.t. TFA (5 ml) and the reaction mixture was stirred for 1 hr. The mixture was diluted with MeOH and it was filtered trough SCX cartridge. The fractions eluted with methanolic ammonia were evaporated in vacuo keeping the bath temperature at 40° C.

Provenance & Evidence