Synthesis of nitrogen- or oxygen- containing ring systems by palladium-catalyzed intramolecular olefin allylations
作者:W. Oppolzer、J.-M. Gaudin、M. Bedoya-Zurita、J. Hueso-Rodriguez、T.M. Raynham、C. Robyr
DOI:10.1016/s0040-4039(00)80587-0
日期:——
Pd(PPh3)4-catalyzed cyclizations of N-allyl(crotyl, or 3-butenyl),N-butenyloxy derivatives and of an allyl(2-butenyloxy) ether give pyrrolidines, piperidines and a tetrahydrofuran in good yields. Hexahydroindoles and octahydroquinolines are thus obtained from the corresponding N-(2- or 3-butenyl),N-(4-acetoxy-2-cyclohexenyl) amides with excellent stereocontrol.
Pd(PPh 3)4催化的N-烯丙基(巴豆基或3-丁烯基),N-丁烯氧基衍生物和烯丙基(2-丁烯氧基)醚的环化反应可高产率地得到吡咯烷,哌啶和四氢呋喃。六氢吲哚和八氢喹啉由此从具有良好立体控制的相应的N-(2-或3-丁烯基),N-(4-乙酰氧基-2-环己烯基)酰胺获得。