A Convenient Method for the Synthesis of Terminal (<b><i>E</i></b>)-1,3-Dienes
作者:F. West、Yong Wang
DOI:10.1055/s-2002-19297
日期:——
undergo efficient olefination reactions with a variety of aldehydes in the presence of HMPA to give terminal 1,3-dienes with high selectivity for the E-isomer. This method is general and procedurally simple.
Acid catalyzed intramolecular Diels-Alder reactions in lithium perchlorate-diethyl ether: Acid promoted migration of terminal dienes prior to [4+2] cycloaddition in conformationally restricted substrates
作者:Paul A. Grieco、James P. Beck、Scott T. Handy、Naoki Saito、John F. Daeuble、Ernest E. Campaigne、Marvin Carmack
DOI:10.1016/0040-4039(94)85004-6
日期:1994.9
Use of 10 mol% camphorsulfonic acid in 5.0 M lithium perchlorate-diethyl ether to promote intramolecularDiels-Alderreactions of conformationally restricted substrates, wherein the substrates possess a terminal diene unit, gives rise to tandem diene migration - [4+2] cycloaddition.