Synthesis and Structure of (η5-cyclohexadienyl)Mn(CO)3 and Cationic (η6-arene)Mn(CO)3 Complexes Comprising a Double Bond Conjugated to the π System
摘要:
Addition of a Grignard reagent to keto-substituted (eta(5)-cyclohexadienyl)Mn(CO)(3) complexes leads to the corresponding alcohols in very good yields. After acidic treatment, dehydration occurs, which gives rise to the formation of unprecedented (eta(5)-cyclohexadienyl)Mn(CO)(3) complexes substituted by a double bond conjugated to the pi system as the major compounds, along with uncoordinated trienones due to the rearrangement of the intermediate carbocation. The structure of one of these eta(5) complexes has been determined by X-ray crystallography as well as one of the corresponding cationic (eta(6)-arene)Mn(CO)(3) complexes formed upon hydride abstraction.
Synthesis and Structure of (η5-cyclohexadienyl)Mn(CO)3 and Cationic (η6-arene)Mn(CO)3 Complexes Comprising a Double Bond Conjugated to the π System
摘要:
Addition of a Grignard reagent to keto-substituted (eta(5)-cyclohexadienyl)Mn(CO)(3) complexes leads to the corresponding alcohols in very good yields. After acidic treatment, dehydration occurs, which gives rise to the formation of unprecedented (eta(5)-cyclohexadienyl)Mn(CO)(3) complexes substituted by a double bond conjugated to the pi system as the major compounds, along with uncoordinated trienones due to the rearrangement of the intermediate carbocation. The structure of one of these eta(5) complexes has been determined by X-ray crystallography as well as one of the corresponding cationic (eta(6)-arene)Mn(CO)(3) complexes formed upon hydride abstraction.