Multistereocenter-Containing Cyclopentanoids from Ynamides via Oxazolidinone-Controlled Nazarov Cyclization
作者:Narasimhulu Manchala、Hanson Y. L. Law、Daniel J. Kerr、Rohan Volpe、Romain J. Lepage、Jonathan M. White、Elizabeth H. Krenske、Bernard L. Flynn
DOI:10.1021/acs.joc.7b00082
日期:2017.7.7
multistereocenter-containing cyclopentyl rings is an area of great significance to organic synthesis. In this work, we describe a general protocol for accessing multistereocenter-containing cyclopentanoidsfrom simple N-alkynyloxazolidinones (Ox-ynamides). This protocol involves conversion of Ox-ynamides into Ox-activated divinyl and aryl vinyl ketones that undergo facile Nazarov cyclization with excellent
作者:Daniel J. Kerr、Michael Miletic、Jason H. Chaplin、Jonathan M. White、Bernard L. Flynn
DOI:10.1021/ol300316a
日期:2012.4.6
Oxazolidinones are powerful promoters of the Nazarov reaction, enabling the cyclization of conventionally resistant substrates to be achieved under mild conditions. They exert excellent regio- and torquoselectivecontrol in both the conventional Nazarov reaction giving cyclopentenones and in the “interrupted” Nazarov reaction, giving more highly substituted multistereocenter containing products.