Pd0-Catalyzed Coupling Cyclization Reaction of Aryl or 1Alkenyl Halides with 1,2-Allenyl Ketones: Scope and Mechanism. An Efficient Assembly of 2,3,4-, 2,3,5-Tri- and 2,3,4,5-Tetrasubstituted Furans
作者:Shengming Ma、Junliang Zhang、Lianghua Lu
DOI:10.1002/chem.200204664
日期:2003.6.6
Described herein is the Pd(0)-catalyzedcoupling cyclization reaction of 1,2-allenyl ketones with organichalides leading efficiently and conveniently to not only 2,3,4- and 2,3,5-trisubstituted furans but also 2,3,4,5-tetrasubstituted furans. Furthermore, this method showed high substituent-loading capability and tolerance of various substituents. The reactions of 1,2-allenyl ketones 1 e, 1 p, 1 q
Pd0-catalyzed cyclization reaction of aryl or alk-1-enyl halides with 1,2-dienyl ketones: a general and efficient synthesis of polysubstituted furans
作者:Shengming Ma、Junliang Zhang
DOI:10.1039/a908627g
日期:——
Under catalysis by Pd0 and Ag2CO3, the reaction of 1,2-allenyl ketones and organic halides in PhMe using Et3N as the base provides a new general access to polysubstituted furans with good to excellent yields.