Novel allylic oxidation of conjugate ketones with VO(OR)Cl2
摘要:
An oxo group is introduced at the allylic position of 3-methyl-2-cyclopenten-1-one and beta-ionone on treatment with VO(OR)Cl2 in ROH. VO(OR)Cl2 induces gamma-alkoxylation in the case of 2-cyclopenten-1-one. Reaction of 1-acetyl-1-cyclohexene with VO(OEt)Cl2 results in gamma-alkoxylation and/or aromatization to give 1-acetyl-3-ethyoxy-1-cyclohexene and the corresponding aromatic.
An oxo group is introduced at the allylic position of 3-methyl-2-cyclopenten-1-one and beta-ionone on treatment with VO(OR)Cl2 in ROH. VO(OR)Cl2 induces gamma-alkoxylation in the case of 2-cyclopenten-1-one. Reaction of 1-acetyl-1-cyclohexene with VO(OEt)Cl2 results in gamma-alkoxylation and/or aromatization to give 1-acetyl-3-ethyoxy-1-cyclohexene and the corresponding aromatic.