The Configurational Stability of Primary Grigard Reagents,

机译：初级格栅试剂的配置稳定性，

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The n.m.r. spectrum of the methylene hydrogen 3,3-dimethylbutylmagnesium chloride in diethyl ether solution changes from an A2X2-type spectrum at 33degrees to an AA'XX'-type at -50degrees. The observation of two distinct vicinal coupling constants at low temperatures indicates that in version of configuration at the -CH2-Mg center is slow on the n.m.r. time scale,and strongly suggests that the populations of the 3 conforma tions are not equal. Evidence supports previous suggestions that changes in rate of inversion are responsible for changes in the appearance of the spectrum. The n.m.r. spectrum of the methylene group of 2-phenyl-3-methylbutylmagnesium chloride also shows a temperature variation suggesting changes in rate of version. (Author)

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作者
whitesides,george m. kaplan,fred;
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年度 1978
页码 p.1-14
总页数 5
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
grignard reagents; organic compoundstemperature; spectroscopy; organic solvents; magnesium compounds; chlorides; organic;

机译：格氏试剂;有机化合物温度;光谱;有机溶剂;镁化合物;氯化物;有机溶剂;

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The Configurational Stability of Primary Grigard Reagents,

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