The stereospecific preparation of two perfluoro-1,3-butadiene synthons; (E)-1-trimethylsilyl-1,2,3,4,4-pentafluoro-1,3-butadiene and (E)-1-tributylstannyl-1,2,3,4,4-pentafluoro-1,3-butadiene
作者:Chongsoo Lim、Donald J. Burton、Craig A. Wesolowski
DOI:10.1016/s0022-1139(02)00246-4
日期:2003.1
(E)-1-Trimethylsilyl-1,2,3,4,4-pentafluoro-1,3-butadiene (1) can be stereospecifically prepared by Pd(0)/Cul catalyzed cross-coupling of (Z)-1-tributylstannyl-1,2-difluoro-2-trimethylsilylethene with iodotrifluoroethene. The corresponding (E)-1-tributylstannyl-1,2,3,4,4-pentafluoro-1,3-butadiene can be prepared via the stereospecific conversion of 1 with Bu3SnOSnBu3/KF (catalysis) to the corresponding vinylstannane. (C) 2002 Elsevier Science B.V. All rights reserved.
(E)-1-三甲基硅油-1,2,3,4,4-五氟-1,3-丁二烯(1)可以通过Pd(0)/Cul催化的异构反应,由(Z)-1-三氟乙基-1,2-二氟-2-三甲基硅油乙烯与碘氟乙烯杂环反应而特异合成。通过使用催化体系Bu3SnOSnBu3/KF,1的相应(E)-1-三氟乙基-1,2,3,4,4-五氟而又双键二烯可以被特异进行转化得到。2002年Elsevier科学出版公司( BV) 版权所有。