New synthesis of 2-azetines and 1-azabutadienes and the use of the latter in Diels-Alder reactions: total synthesis of (.+-.)-.delta.-coniceine
摘要:
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.
New synthesis of 2-azetines and 1-azabutadienes and the use of the latter in Diels-Alder reactions: total synthesis of (.+-.)-.delta.-coniceine
摘要:
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.