Intramolecular [2 + 2] cycloaddition reactions of vinylketenes. stereo- and regiospecific preparation of vinylketenes from α,β-unsaturated acid chlorides.
作者:Yashwant S. Kulkarni、Beverly W. Burbaum、Barry B. Snider
DOI:10.1016/s0040-4039(01)80902-3
日期:1985.1
Treatment of α,β-unsaturated acid chlorides 5, 6, 14, 17, and 18 with NEt3 in toluene at reflux generates, stereo- and regiospecifically, the vinylketene which undergoes a facile intramolecular [2 + 2] cycloaddition.
用甲苯中的NEt 3回流处理α,β-不饱和酰氯5、6、14、17和18,在立体和区域上会产生乙烯-乙烯,该乙烯-乙烯容易进行分子内[2 + 2]环加成反应。