In the presence of catalytic amounts of a fluoride source, O-trimethylsilyl enethers undergo condensation with acyl fluorides to afford O-enesters with high yields. The intermediates and final products are pure (Z) isomers if only one double bound is in conjugation with the oxygen atom whereas (E) isomers prevail if silyl dienethers or trienethers and O-dienesters or O-trienesters are formed.
在催化量的
氟化物源存在下,O-三甲基甲
硅烷基醚与酰基
氟缩合,以高收率得到O-酯。如果仅一个双键与氧原子共轭,则中间体和最终产物为纯的(Z)异构体,而如果形成甲
硅烷基二烯醚或
三烯醚和O-二酯或O-三酯,则(E)异构体占优势。