Diastereoselectivity in the dihydroxylation of isopropenyl substituted three-membered rings
摘要:
The diastereoselectivity of the dihydroxylation of isopropenylcyclopropanes, oxiranes and aziridines has been investigated. (C) 1999 Elsevier Science Ltd. All rights reserved.
Secondary deuterium kinetic isotope effects at the termini of cis-1,2-divinylcyclopropane and cis-1,2-divinylcyclobutane in their 3,3-sigmatropic shifts: evidence for different transition-state structures
Palladium-Promoted Neutral 1,4-Brook Rearrangement/Intramolecular Allylic Cyclization Cascade Reaction: A Strategy for the Construction of Vinyl Cyclobutanols
作者:Hao Zhang、Shiqiang Ma、Ziyun Yuan、Peng Chen、Xingang Xie、Xiaolei Wang、Xuegong She
DOI:10.1021/acs.orglett.7b01381
日期:2017.7.7
cascade reaction to build vinyl cyclobutanol rings through activation of vinyl epoxides by palladium, followed by 1,4-Brook rearrangement and intramolecular cyclization with a palladium complex of the resulting carbon anion, is described. Through this cascade reaction, several highly substituted cyclobutanol substrates were achieved in good yields with high stereoselectivities.
Rh(I)-Catalyzed [5 + 1] Cycloaddition of Vinylcyclopropanes and CO for the Synthesis of α,β- and β,γ-Cyclohexenones
作者:Guo-Jie Jiang、Xu-Fei Fu、Qian Li、Zhi-Xiang Yu
DOI:10.1021/ol2031526
日期:2012.2.3
A cationic Rh(I)-catalyzed [5 + 1] cycloaddition of vinylcyclopropanes and CO has been developed, affording either beta,gamma-cyclohexenones as major products or alpha,beta-cyclohexenones exclusively, under different reaction conditions.