In view of several synthetic and biological, pharmacological applications of benzocycloheptene-5-one derivatives, the present work aimed to achieve 2,3-dimethyl-6-(1-phenyl but-3-enyl)-6,7,8,9-tetrahydro benzocyclohepten-5-ones (9a-c);1-(9,10-dimethyl-4-phenyl-6,7,-dihydro-5H-benzo[6,7]cyclohepta[1,2-d]pyrimidin-2-yl)pyrrolidine-2,5-dione (11) and 2-(9,10-dimethyl-4-phenyl-6,7-dihydro-5H-benzo[6,7]cyclohepta[1,2-d] pyridine-2-yl) isoindole-1,3-dione (12).