Trifluoroacetic acid → ethyl P-(4-amino-1,1,1-trifluoro-but-2-yl)-P-methyl-phosphinate trifluoroacetate

Participants

Reaction Steps

250 mg of platinum oxide are added to a solution of 458.28 mg (2 mmol) of ethyl P-(3-cyano-1,1,1-trifluoro-prop-2-yl)-P-methyl-phosphinate dissolved in 28 ml of trifluoroacetic acid, and the resulting mixture is hydrogenated at 25° and 4 bar. The catalyst is filtered off and the filtrate is evaporated to dryness under reduced pressure. The resulting crude product is chromatographed on 70 g of Opti-Up® C12 with acetonitrile as the eluent. The product-containing fractions are combined and evaporated under reduced pressure to give ethyl P-(4-amino-1,1,1-trifluoro-but-2-yl)-P-methyl-phosphinate trifluoroacetate as an oil.

Provenance & Evidence