The Diels-Alder Reactions of 6,6-Dimethoxycyclohexa-2,4-dienone Generated by Pyrolysis of its Dimer
作者:Santhosh Kumar Chittimalla、Chun-Chen Liao
DOI:10.1055/s-2002-22717
日期:——
The MOB 2 generated in situ by the pyrolysis of itsdimer 3 participated in Diels-Alder reactions with various olefinic and acetylenic dienophiles at 220 °C to provide bicyclo[2.2.2]octenones and bicyclo[2.2.2]]octadienones, respectively. Reactions proceeded with high degree of regio- and stereoselectivity.
Domino retro Diels–Alder/Diels–Alder reaction: an efficient protocol for the synthesis of highly functionalized bicyclo[2.2.2]octenones and bicyclo[2.2.2]octadienones
A novel and convenient approach, the domino retro Diels-Alder/Diels-Alder reaction sequence for highly stereo- and regioselective synthesis of various bicyclo[2.2.2]octenone and bicyclo[2.2.2]octadienone derivatives is presented. Thus, the masked o-benzoquinones (MOBs) 2a-e generated by the pyrolysis of the respective dimers 3a-e participated in this novel synthetic strategy with a variety of olefinic