Reaction of 1-bromo-1,2-dienes with alkylcuprates as a regio- and stereo-selective route to acetylenic or allenic compounds
作者:Carmela Polizzi、Carla Consoloni、Luciano Lardicci、Anna Maria Caporusso
DOI:10.1016/0022-328x(91)80179-n
日期:1991.10
Alkylcuprates react with 1-bromo-1,2-dienes to give allenic and/or acetylenic products. The selectivity of the crosscoupling is markedly dependent on the nature of the copper reagent, which plays a prominent role in determining both the regio- and the stereo-chemistry. The preparative aspects of these copper-induced reactions are discussed and their possible mechanism discussed.
Convenient method for the stereoselective synthesis of 3-phenyl-1-alkynes
作者:Anna Maria Caporusso、Carmela Polizzi、Luciano Lardicci
DOI:10.1021/jo00226a038
日期:1987.8
Baker,C.S.L. et al., Proceedings of the Chemical Society, London, 1963, p. 340
作者:Baker,C.S.L. et al.
DOI:——
日期:——
The preparation of 1-cyanoallenes
作者:P. M. Greaves、S. R. Landor、D. R. J. Laws
DOI:10.1039/c19650000321
日期:——
Allenes. Part XI. The preparation of 3-alkyl- and 3,3-dialkyl-1-bromoallenes
作者:S. R. Landor、A. N. Patel、P. F. Whiter、P. M. Greaves
DOI:10.1039/j39660001223
日期:——
3-Alkyl- and 3,3-dialkyl-1-bromoallenes are prepared in excellent yield by the action of hydrobromic acid (45–50%) on secondary or tertiary acetylenic carbinols. They show an exceptionally intense band in the infrared region, a small maximum in the ultraviolet region above 210 mµ, and the expected n.m.r. long range spin–spin coupling.
通过氢溴酸(45%至50%)对仲或叔炔醇的作用,可以以极好的收率制备3-烷基和3,3-二烷基-1-溴代烯丙基。它们在红外区域显示出异常强烈的谱带,在210 m µ以上的紫外区域显示出很小的最大值,并且具有预期的nmr长程自旋-自旋耦合。