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化学学报
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化学学报 ›› 1962, Vol. 28 ›› Issue (4): 200-203. 上一篇    下一篇

论文

自由基反应的研究——Grignard试剂与2-溴辛烷在二溴化钴存在下的反应

刘有成   

  1. 兰州大学化学系
  • 投稿日期:1961-05-29 发布日期:2013-06-03

STUDIES OF FREE RADICAL REACTIONS THE REACTION OF GRIGNARD REAGENTS WITH 2-BROMOOCTANE IN THE PRESENCE OF COBALTOUS BROMIDE

LIU YU-CHENG   

  1. Department of Chemistry, Lanchow University
  • Received:1961-05-29 Published:2013-06-03

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对三种Grignard试剂与2-溴辛烷在少量二溴化钴存在下的反应作了研究.由有机溴化物衍生的2-辛基在反应条件下大部分(44—58%)歧化, 生成辛烷和辛烯的混合物, 也有相当一部分(26—35%)形成二聚合的产物.反应的气体产物也经过分析.结果与自由基的鏈式历程相符合.2-辛基歧化时辛烯生成的量随所用Grignard试剂不同而有所改变.这指出不同烷基之间发生混合歧化作用的可能性.

The reaction of three different Grignard reagents with 2-bromooctane in the presence of small amounts of cobaltous bromide has been studied.Under the reaction conditions, the 2-octyl radical derived from the organic bromide largely(44-58%) disproportionated, forming a mixture of octane and octenes, and to a considerable extent(26-35%) dimerized.The gaseous products of the reaction have been analysed.The results were in accord with the free radical chain mechanism of these reactions.