Transformations of ethoxycarbonyl-substituted but-3-enyl and cyclopropylmethyl radicals: characterisation by e.s.r. spectroscopy
作者:Alwyn G. Davies、Bernard T. Golding、Robyn S. Hay-Motherwell、Samson Mwesigye-Kibende、D. N. Ramakrishna Rao、Martyn C. R. Symons
DOI:10.1039/c39880000378
日期:——
Ethoxycarbonyl-substituted but-3-enyl and cyclopropylmethyl radicals were generated from the corresponding halides by treatment with tributyltin and triethylsilyl radicals in cyclopropane solution; the radicals were characterised by e.s.r. spectroscopy and the rearrangement at –40 °C of the 3-ethoxycarbonylbut-1-enyl radical to the 1-ethoxycarbonylbut-1-enyl radical was demonstrated.
用三丁基锡和三乙基甲硅烷基在环丙烷溶液中处理,由相应的卤化物生成乙氧基羰基取代的丁-3-烯基和环丙基甲基。通过esr光谱对自由基进行了表征,并证明了在–40°C下3-乙氧基羰基丁-1-烯基重排为1-乙氧基羰基丁-1-烯基。