M. Miyashita et al., A NEW AND EFFICIENT ESTERIFICATION REACTION VIA MIXED ANHYDRIDES BY THE PROMOTION OF A CATALYTIC AMOUNT OF LEWIS-ACID, Bulletin of the Chemical Society of Japan, 66(5), 1993, pp. 1516-1527
In the presence of a catalytic amount of Lewis acid, various carboxyli
c esters or S-phenyl carbothioates are prepared in excellent yields by
the respective reactions of equimolar amounts of silyl carboxylates a
nd alkyl silyl ethers or phenyl silyl sulfides with 4-trifluoromethylb
enzoic anhydride.