Addition of diphenylphosphine to Michael-type olefins: the preparation of phosphine-nitrile and phosphine-ester ligands
作者:D.A. Blinn、R.S. Button、V. Farazi、M.K. Neeb、C.L. Tapley、T.E. Trehearne、S.D. West、T.L. Kruger、B.N. Storhoff
DOI:10.1016/0022-328x(90)87207-t
日期:1990.8
ionates. For the products from 1-cyanocyclopentene and 1-cyanocyclohexene, 13C and 31P NMR data are consistent with the formation of both trans (Ph2P equatorial and CN axial) and cis (both Ph2P and CN equatorial) isomers. The morpholine amide of 3-diphenylphosphinopropionic acid has been obtained by treatment of methyl-3-diphenylphosphinopropionate with the dimethylaluminum adduct of morpholine. This
已经进行了五种迈克尔型烯烃与二苯基膦的反应。1-氰基环戊烯,1-氰基环己烯和4-叔丁基-1-氰基环己烯均提供相应的2-二苯基膦基-1-氰基环烷烃,丙烯酸甲酯和甲基丙烯酸乙酯均产生相应的2-二苯基膦酸丙酸酯。对于1-氰基环戊烯和1-氰基环己烯的产物,13 C和31 P NMR数据与反式(Ph 2 P赤道和CN轴)和顺式(Ph 2都)的形成一致。P和CN赤道)异构体。通过用吗啉的二甲基铝加合物处理-3-二苯基膦酸丙酸甲酯,可以得到3-二苯基膦酸丙酸的吗啉酰胺。该膦Ph 2 Pmorph已分离为其钯(II)配合物(Ph 2 Pmorph)2 PdCl 2。通过使PhP(CH 2)2还原,使Ph 2 P(CH 2)3 NH 2反应,得到膦-苯甲二胺Ph 2 P(CH 2)3 NC(H)C 6 H 5。CN,在分子筛存在下与苯甲醛一起使用。