作者:Teruaki Mukaiyama、Koichi Homma、Haruhiro Takenoshita
DOI:10.1246/cl.1988.1725
日期:1988.10.5
α-Mono- and α,α,-disubstituted cyclic ethers are prepared in good yields by the successive treatment of lactones with t-butyldimethylsiloxy-1-ethoxyethene and silyl nucleophiles (triethylsilane, allyltrimethylsilane, trimethylsilyl cyanide, etc.) in the presence of a catalytic amount of trityl salts such as TrSbCl6, TrSbF6 and TrClO4 or antimony pentachloride combined with chlorotrimethylsilane and
通过用叔丁基二甲基甲硅烷氧基-1-乙氧基乙烯和甲硅烷基亲核试剂(三乙基硅烷、烯丙基三甲基硅烷、三甲基氰化氰化物等)连续处理内酯,以良好的收率制备 α-单-和 α,α,-二取代环醚。催化量的三苯甲基盐,如 TrSbCl6、TrSbF6 和 TrClO4 或五氯化锑与三甲基氯硅烷和锡 (II) 卤化物结合。