Reaction of alicyclic reformatsky reagents with 2,5-bis(arylmethylidene)cyclopentanones
摘要:
Reformatsky reaction of methyl 1-bromocyclobutane-, 1-bromocyclopentane-, 1-bromocyclohexane-, and 1-bromocycloheptanecarboxylates with 2,5-bis(arylmethylidene)cyclopentanones gave the corresponding 4'-aryl-7'-arylmethylidene-4',5',6',7'-tetrahydro-2'H-spiro[cycloalkane-1,3-cyclopenta[b]pyran]-2'-ones.