METHOD FOR PREPARING 2,2-DIFLUOROETHYLAMINE DERIVATIVES STARTING FROM N-(2,2-DIFLUOROETHYL)PROP-2-EN-1-AMINE

摘要

A method for preparing 2,2-difluoroethylamine derivatives of formula (IV) comprises steps (i) and (ii). In step (i), N-(2,2-difluoroethyl)prop-2-en-1-amine of formula (I) is reacted with a compound of formula (II) A-CH₂-E to form a compound of formula (III), optionally in the presence of an inorganic or organic base. In step (ii), the allyl group is removed (deallylation) from the compound of formula (III), A and E in formulae (II), (III) and (IV) having the meanings indicated in the description.