Spectroscopic Characterization, Reactivity, and Reactions of (Arene)Cr(CO)<sub>3</sub>-Stabilized γ-Propargyl−Allenyl Cations
作者:Thomas J. J. Müller、Markus Ansorge、Kurt Polborn
DOI:10.1021/om9900824
日期:1999.8.1
(Arene)Cr(CO)3-stabilized γ-propargyl−allenyl cations Cr(CO)3(η6-R1C6H4)C⋮CC+R2R3 (2) are reactive intermediates in the synthesis of arene-complex-substituted allenes or propargyl derivatives using mild in situ ionizations of the corresponding propargyl derivatives Cr(CO)3(η6-R1C6H4)C⋮CCXR2R3 (X = OH, OAc). The regioselectivity of the nucleophilicattack is strongly dependent on the substitution pattern