Facile and convenient synthetic methods for bis(trifluoroacetyl)ketene N,O-, N,S- and S,S-acetals and 2,2-bis(trifluoroacetyl)vinylamines and sulfides

Article abstract of DOI:10.1055/s-1992-26134

Trifluoroacetylation of (trifluoroacetyl)ketene N,O-, N,S- and S,S-acetals [4-dialkylamino-4-ethoxy(methylthio)-1,1,1-trifluoro-3-buten-2-one and 4,4-bis(methylthio)-1,1,1-trifluoro-3-buten-2-one] gives the corresponding 1,1,1-trifluoro-3-(trifluoroacetyl