An unusual .gamma.-silyl effect in titanium tetrachloride catalyzed arylation of 1,4-benzoquinones
摘要:
Cyclopropylbenzene (1c) reacts with 2-methoxy-1,4-benzoquinone in the presence of TiCl4 to give 2-(4'-cyclopropylphenyl)-5-methoxy-1,4-benzoquinone in moderate yield (46%). Considerable improvement in yield (69%) is observed in reactions of trans-2-phenyl-1-(trimethylsilyl)cyclopropane (1a) with the TiCl4-quinone complex.
An unusual .gamma.-silyl effect in titanium tetrachloride catalyzed arylation of 1,4-benzoquinones
作者:Thomas A. Engler、Jayachandra P. Reddy
DOI:10.1021/jo00023a005
日期:1991.11
Cyclopropylbenzene (1c) reacts with 2-methoxy-1,4-benzoquinone in the presence of TiCl4 to give 2-(4'-cyclopropylphenyl)-5-methoxy-1,4-benzoquinone in moderate yield (46%). Considerable improvement in yield (69%) is observed in reactions of trans-2-phenyl-1-(trimethylsilyl)cyclopropane (1a) with the TiCl4-quinone complex.