Reaction of methyl 1-bromocyclopentane- and -cyclohexanecarboxylates with zinc and 2-arylmethylideneindan-1,3-diones
摘要:
Methyl 1-bromocyclopentanecarboxylate and methyl 1-bromocyclohexanecarboxylate reacted with zinc and 2-arylmethylideneindan-1,3-diones to give methyl-1-[(aryl)(1,3-dioxo-2,3-dihydro-1H-inden-2-yl)-methyl]cyclopentane(or cyclohexane)carboxylates and 4'-aryl-2'H-spiro[cyclopentane(or cyclohexane)-1,3'-indeno[ 1,2-b]pyran]-2',5'(4'H)-diones.