Carbon dioxide fixation by Cp2(η3-allyl)Ti complexes generated from various dienes
作者:Yuan Gao、Satoshi Iijima、Hirokazu Urabe、Fumie Sato
DOI:10.1016/0020-1693(94)03904-6
日期:1994.7
Abstract Cp2(η3-allyl)Ticomplexes having a variety of substituents on their allyl moieties were prepared from corresponding dienes, Cp2TiCl2, and Grignard reagents and were subjected to reaction with carbondioxide. The reaction of CO2 took place in a highly regioselective manner to give a single β, γ-unsaturated carboxylic acid of a few possible regioisomeric products after hydrolytic workup of the
Synthesis of 1,1-Disubstituted Ethenes by Means of Sequential Cross-Coupling Reactions
作者:V. Fiandanese、G. Marchese、F. Naso、L. Ronzini
DOI:10.1055/s-1987-28164
日期:——
A variety of 1-alkenes are synthesized in 63-91% yields by means of sequential cross-coupling reactions of Grignard reagents with readily available or commercial starting materials, in the presence of transition-metal catalysts.
Regioselective Synthesis of <i>tert</i>-Allylic Ethers via Gold(I)-Catalyzed Intermolecular Hydroalkoxylation of Allenes
作者:Maximillian S. Hadfield、Ai-Lan Lee
DOI:10.1021/ol902675k
日期:2010.2.5
A highly regioselective method towards tertiary allylic ethers via gold(I)-catalyzed intermolecular hydroalkoxylation of allenes is disclosed. Preventing subsequent isomerization of the tertiary allylic ether products to primary allylic ethers appears to be the key to achieving high regioselectivities.
作者:A. G. Ibragimov、A. P. Zolotarev、R. R. Muslukhov、S. I. Lomakina、U. M. Dzhemilev
DOI:10.1007/bf00696970
日期:1995.1
A novel regioselective method has been developed for the synthesis of 2-substituted 1,3-butadienes by beta-vinylation of alpha-olefins with AlEt(3) in the presence of Ni- and Zr-containing catalysts.