作者:Charles P. Casey、William R. Brunsvold
DOI:10.1016/s0022-328x(00)86470-0
日期:1974.9
The reaction of vinyllithium with (CO)5CrC(OCH3)C6H5 (Ic) at−78° followed by the treatment with HCl at −78° gave 43% (Z)-1-methoxy-1-phenylpropene (IIIa) and 21% 1,4-dimethoxy-1,4-diphenyl-1,3-butadiene (IVa) and no trace of a vinylphenylcarbene complex or its expected decomposition products. IIIa and IVa are proposed to arise from electrophilic attack at the carbon-carbon double bond of a σ-allychromium
乙烯基锂在-78°下与(CO)5 CrC(OCH 3)C 6 H 5(Ic)的反应,然后在-78°下用HCl处理,得到43%(Z)-1-甲氧基-1-苯基丙烯( IIIa)和21%的1,4-二甲氧基-1,4-二苯基-1,3-丁二烯(IVa),没有痕量的乙烯基苯基卡宾配合物或其预期的分解产物。有人认为IIIa和IVa是由在σ-烯丙基铬中间体的碳-碳双键处的亲电作用引起的。苯基锂与(CO)5 CrC(OCH 3)CH = CHC 6 H 5(V)的反应得到9%(CO)5 CrC(OCH 3)CH 2 CH-(C 6H 5)2(VI)和17%(E)-1-甲氧基-1,3-二苯丙烯(VII)。V与二苯基铜锂锂的反应产生了30%的共轭加成产物VI。