8-aryl-2-azabicyclo[3.3.1]nonan-7-ones. Synthesis and retro-michael ring opening
作者:Josep Bonjoch、Josefina Quirante、Daniel Solé、Josep Castells、Montserrat Galceran、Joan Bosch
DOI:10.1016/s0040-4020(01)87110-6
日期:1991.1
The synthesis of 8-aryl-2-azabicyclo[3.3.1]nonan-7-ones (7) by acid cyclization of 4-(3-aryl-2-oxopropyl)-2-piperidinecarbonitriles (5) is reported. Bicyclic α-aril-β-amino ketones 7 easily undergo a retro-Michael ring opening to give the corresponding 2-arylcyclohexenones 8.
8-芳基-2-氮杂双环的合成[3.3.1]壬烷-7-酮(7)由4-(3-芳基-2-氧代丙基)的环化酸-2- piperidinecarbonitriles(5报道)。双环α-芳基-β-氨基酮7容易经历迈克尔环的逆向开环,从而得到相应的2-芳基环己烯酮8。