Reactions of 6-silyloxy-6-alkyl-fulvenes with dimethyl acetylenedicarboxylate, maleic anhydride and 2-chloroacrylonitrile resulted in the formation of expected 7-substituted bicyclo [2.2.1]hepta-2,5-diene and hept-5-ene derivatives. Treatment of these adducts with Bu4NF produced the 7-norborn-5-enyl and 7-norborno-2,5-dienyl aldehydes and ketones in good yields.