在制备plusieurs systemes contenant deux 烯烃亲电试剂,l'une etant une cetone α-methylene, l'autre un酯α,β-insature。L'addition de Michael de l'enolate delithium du trimethylsiloxy-2methyl-3butene-1 sur ces systemes, suvie d'une加成intramoleculaire de Michael, 管道系统三环a 3 noyaux en C 6 。对 pu ainsi obtenir le dimethyl-3aflavinine
作者:Michael G. Silvestri、M. Paul Hanson、James G. Pavlovich、Luisa F. Studen、Michael S. DeClue、Michael R. DeGraffenreid、Christopher D. Amos
DOI:10.1021/jo9824807
日期:1999.9.1
steric bulk containing an enolcarbonate have been synthesized and reacted selectively with ozone at the isolated double bonds. Rate measurements have been made for ozonolysis in a series of substituted cyclohexenes to demonstrate the unusually slow reactivity of the enolcarbonate. Proton and carbon NMR chemical shifts have been presented to show that the enolcarbonate is not particularly electron