The cycloaddition of phenylglyoxylonitrileoxide to the 7-substitutednorbornadienes a-c gives predominantly the endo isomers, but that to the 8-substituted2-azabicyclo[3.2.1]oct-3,6-dienes a,b the exo isomers.
The Cheletropic Addition of Dichlorocarbene to 2-Phenylsulfonyl-2-azabicyclo[3.2.1]octa-3,6-diene and Its 8-Substituted Derivatives
作者:Hiroo Inoue、Kazuhiko Tokisato、Katsumi Umano
DOI:10.1246/bcsj.55.1661
日期:1982.5
It was found that dichlorocarbene undergoes exo addition preferentially on the C3–C4 double bond of 2-phenylsulfonyl-2-azabicyclo[3.2.1]octa-3,6-diene and endo addition on that of 2-phenylsulfonyl-syn-8-benzoyloxy-2-azabicyclo[3.2.1]octa-3,6-diene.