REACTION OF ALICYCLIC REFORMATSKY REAGENTS WITH N-(3-PHENYLALLYLIDEN)ARYLAMINES
Alicyclic Reformatsky reagents react with N-(3-phenylallyliden)arylamines to give 2-aryl-3-(2-phenylethenyl)-2-azaspiro[3.3]heptan-1-ones, 2-(4-bromophenyl)-3-(2-phenylethenyl)-2-azaspiro[3.5]nonan-1-one and 2-(4-bromophenyl)-3-(2-phenylethenyl)-2-azaspiro[3.6]decan-1-one.