2,2,2-Trifluoroethanol → (2S,4R)-1-tert-Butyl 2-methyl 4-(4-(2,2,2-trifluoroethoxy)-2-(trifluoromethyl)phenylsulfonyl)pyrrolidine-1,2-dicarboxylate

Participants

Reaction Steps

In analogy to the procedure described in example 306, (2S,4R)-4-(4-fluoro-2-trifluoromethyl-benzenesulfonyl)-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester (example 208 c) was treated with 2,2,2-trifluoroethanol and cesium carbonate to give a mixture of the title compound and starting material as yellow oil. MS (ESI): m/z=436.1 [M+H]+.

Provenance & Evidence