Direct Copper‐Free Domino Conjugate Addition‐Cycloallylation using Organozinc Reagents
作者:Venukrishnan Komanduri、Fernando Pedraza、Michael J. Krische
DOI:10.1002/adsc.200800242
日期:2008.7.7
The Direct Approach: Enones possessing appendant allylic carbonates react directly with diorganozinc reagents in the presence of zinc diiodide [ZnI(2)] to provide 5- and 6-membered ring products of tandem or dominoconjugate addition-cycloallylation in good to excellent yield. In a related copper-free transformation, allylic carbonates are found to engage in direct allylic substitution with diorganozinc
Rhodium-catalyzed substitution of allylic carbonates with enoxysilanes
作者:Takako Muraoka、Isamu Matsuda、Kenji Itoh
DOI:10.1016/s0040-4039(00)01448-9
日期:2000.11
Substitution at the allylic position proceeds smoothly in rhodium-catalyzed reactions of allyl carbonates with enoxysilanes under almost neutral conditions to give gamma,delta -unsaturated ketones in good to excellent yields. (C) 2000 Elsevier Science Ltd. All rights reserved.
Tungsten-catalyzed allylic alkylations. New avenues for selectivity
作者:Barry M. Trost、Ming Hong Hung
DOI:10.1021/ja00364a055
日期:1983.12
TROST, B. M.;HUNG, MING-HONG, J. AMER. CHEM. SOC., 1983, 105, N 26, 7757-7759