摘要:
A sequential transformation consisting of a twofold Heck reaction of 1,2-diiodobenzene (14) with allyl alcohol (2) followed by an intramolecular aldol condensation is suitable for the construction of the benzocyclohept-2-ene-2-carboxaldehyde (15). Under the same reaction conditions 1,8-diiodonayhthalene (7) lends to 1-acenaphthenyl-methanol (6), 2-(1-acenaphthenyl)-ethanol (8), 1-(1w-acenaphthenyl)-ethanol (11), 5-(1,8-naphthalena)-nonan-2,8-dione (12) and 5-(1-naphthyl)-3-methylpentan-2-on (13) mainly.