Copper(I)-Catalyzed Intramolecular Hydroalkoxylation of Unactivated Alkenes
摘要:
A Cu(I)-Xantphos system catalyzed the intramolecular hydroalkoxylation of unactivated terminal alkenes, giving five- and six-membered ring ethers. This system is applicable to both primary and secondary alcohols. A reaction pathway involving the addition of the Cu-O bond across the C-C double bond is proposed. A chiral Cu(I) catalyst system based on the (R)-DTBM-SEGPHOS ligand promoted enantioselective reaction with moderate enantioselectivity.
Gold nanoclusters stabilized by poly(N-vinyl-2-pyrrolidone) (Au:PVP NCs, O = 1.3nm) behave as Lewis acid catalyst in aqueous media under aerobic conditions, to promote the intramolecular hydroalkoxylation of unactivated alkenes. Molecular oxygen generates a reaction center having the Lewis acidic character on the surface of Au NCs in which constituent gold atoms are formally in zero-valence state.
由聚(N-乙烯基-2-吡咯烷酮)(Au:PVP NCs,O = 1.3nm)稳定的金纳米团簇在有氧条件下在水性介质中充当路易斯酸催化剂,以促进未活化烯烃的分子内加氢烷氧基化。分子氧在 Au NCs 表面产生具有路易斯酸性特征的反应中心,其中组成金原子在形式上处于零价态。
Substituted tetrahydrofurfurylamines as potential antidepresaants
作者:I. Monkovic、Y. G. Perron、R. Martel、W. J. Simpson、J. A. Gylys
DOI:10.1021/jm00262a021
日期:1973.4
Copper(I)-Catalyzed Intramolecular Hydroalkoxylation of Unactivated Alkenes
A Cu(I)-Xantphos system catalyzed the intramolecular hydroalkoxylation of unactivated terminal alkenes, giving five- and six-membered ring ethers. This system is applicable to both primary and secondary alcohols. A reaction pathway involving the addition of the Cu-O bond across the C-C double bond is proposed. A chiral Cu(I) catalyst system based on the (R)-DTBM-SEGPHOS ligand promoted enantioselective reaction with moderate enantioselectivity.