Diisopropylethylamine → (R)-4-(7-chloro-5-cyclopropyl-thiazolo[4,5-d]pyrimidin-2-yl)-1-(4-trifluoromethyl-benzenesulfonyl)-piperazine-2-carboxylic acid 4-trifluoromethoxy-benzylamide

Participants

Reaction Steps

To a mixed solution of the compound (0.75 g) obtained in Step 2 and 2,7-dichloro-5-cyclopropyl-thiazolo[4,5-d]pyrimidine (0.36 g) in chloroform (7.5 ml) was added at room temperature N,N-diisopropylethylamine (0.31 ml). After stirring overnight at room temperature, the reaction mixture was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate:n-hexane=2:3-3:2) to give the title compound (0.99 g).

Provenance & Evidence