Synthesis of Cyclopentenols and Cyclopentenones via Nickel-Catalyzed Reductive Cycloaddition
作者:Aireal D. Jenkins、Ananda Herath、Minsoo Song、John Montgomery
DOI:10.1021/ja206722t
日期:2011.9.14
Strategies for the reductive cycloaddition of enals or enoates with alkynes have been developed. The enal-alkyne cycloaddition directly affords cyclopentenols, whereas the enoate-alkyne cycloaddition affords the analogous cyclopentenones. The mechanism of these processes likely involves formation and protonation of a metallacyclic intermediate. The general strategy provides a straightforward entry
Access to diversely α-substituted cyclopentenones from α-chlorocyclopentenones
作者:Audrey Giannini、Yoann Coquerel、Andrew E. Greene、Jean-Pierre Deprés
DOI:10.1016/j.tetlet.2004.07.049
日期:2004.8
alpha-Chlorocyclopentenones can readily be transformed into a variety of alpha-substituted cyclopentenones via their dimethyltrimethylene acetals. (C) 2004 Elsevier Ltd. All rights reserved.