Preparation of 2-phospholene derivatives from zirconacyclopentenes
摘要:
Zirconacyclopentenes, which are easily prepared from alkynes, alkenes, and zirconocene compounds, reacted with dichlorophenylphosphine to give 2-phospholene in high yields. The reaction was performed conveniently in one-pot from an alkyne, alkene, dichlorophosphine, and zirconocene compounds. (C) 2010 Elsevier Ltd. All rights reserved.
Metal-promoted cyclization. 19. Novel bicyclization of enynes and diynes promoted by zirconocene derivatives and conversion of zirconabicycles into bicyclic enones via carbonylation
Tandem insertion of allenyl carbenoids and aldehydes into zirconacycles: an unexpected cyclisation
作者:George J. Gordon、Richard J. Whitby
DOI:10.1039/a702732j
日期:——
Allenyl carbenoids (3-chloro-1-lithioalk-1-ynes) insert into
zirconacyclopentanes and zirconacyclopentenes to afford cyclic
η
3
-allenyl/prop-2-ynyl zirconocene complexes which give
allenyl, alkynyl or cyclised-alcohol products on addition of aldehydes
activated with boron trifluoride–diethyl ether.
烯基碳烯烃(3-氯-1-硫代烷基-1-炔)插入到锆环戊烷和锆环戊烯中,生成环状 η 3 - 烯基/丙-2-炔基锆烯烃络合物,在加入用三氟化硼-二乙基醚活化的醛后,可生成烯基、炔基或环状醇产品。
NEGISHI EI-ICHI; SWANSON D. R.; CEDERBAUM F. E.; TAKAHASHI TAMOTSU, TETRAHEDRON LETT., 28,(1987) N 9, 917-920
作者:NEGISHI EI-ICHI、 SWANSON D. R.、 CEDERBAUM F. E.、 TAKAHASHI TAMOTSU