2,5-Cyclohexadien-1-one to bicyclo[3.1.0]hexenone photorearrangement. Development of the reaction for use in organic synthesis
作者:Arthur G. Schultz、Frank P. Lavieri、Mark Macielag、Mark Plummer
DOI:10.1021/ja00247a027
日期:1987.6
Le mecanisme le plus plausible fait intervenir un zwitterion de preference a un biradical organique
Le mecanisme le plus plausible fait intervenir un zwitterion de preferred a un biradicalorganique
Organometallic compounds in organic synthesis. Part 13. Stereoselectivity of complexation of cyclohexadiene esters
作者:B. M. Ratnayake Bandara、Arthur J. Birch、Warwick D. Raverty
DOI:10.1039/p19820001755
日期:——
Complexation of cyclohexadienes with Fe(CO)3 as the entering group are subject to classical steric hindrance by alkyl groups, but CO2R and related groups introduce a competing factor because they favour sterically the entering group, probably through an intermediate complex. Increase of π-electron availability in the initial 1,4-diene by the attachment of OMe reduces this influence, probably because