作者:Yoon-Jung Kim、Yeokwon Yoon、Hee-Yoon Lee
DOI:10.1016/j.tet.2013.05.095
日期:2013.9
stereoselective total synthesis of (+)-pentalenene was achieved through the tandem cycloaddition reaction of the allenyl diazo substrate prepared from (+)-citronellal. The initial intramolecular [2+3] cycloaddition reaction between the diazo functionality and the allenyl group produced the trimethylenemethane (TMM) intermediate after immediate loss of nitrogen molecule from the cycloaddition intermediate.
通过(+)-香茅醛制得的烯丙基重氮底物的串联环加成反应实现了(+)-戊烯的立体选择性全合成。重氮官能团和烯基之间的初始分子内[2 + 3]环加成反应在环加成中间体中立即失去氮分子后产生了三亚甲基甲烷(TMM)中间体。TMM随后与烯烃的[2 + 3]环加成反应选择性地产生了角熔融的三喹烷结构。