The (±)-5-Aza[1.0]triblattane Skeleton via Azetine Cycloaddition
作者:Chuyi Su、Madeleine A. Dallaston、Renée D. Watson、Tyler Fahrenhorst-Jones、Jacob P. Cameron、Gregory K. Pierens、Paul V. Bernhardt、G. Paul Savage、Craig M. Williams
DOI:10.1021/acs.orglett.3c03655
日期:2024.4.12
The first synthesis of the 5-aza[1.0]triblattaneskeleton was achieved through a [4 + 2] cycloaddition approach using a suitably protected azetine and cyclopentadiene. A series of azetines were synthesized to explore both stability and suitable N-protection. The key step following cycloaddition utilized a noninitiated protonated aminyl radical cyclization to install the final 5-azatriblattane bond
New synthesis of 2-azetines and 1-azabutadienes and the use of the latter in Diels-Alder reactions: total synthesis of (.+-.)-.delta.-coniceine
作者:Michael E. Jung、Yong Mi Choi
DOI:10.1021/jo00024a001
日期:1991.11
An efficient synthesis of 1-acyl-2-azetines, their thermal electrocyclic ring opening to 1-acyl-1-azabutadienes, and intra- and intermolecular Diels-Alder reactions of the resultant azadienes are described. A total synthesis of (+/-)-delta-coniceine has been carried out by this route.