作者:Hiroaki Taguchi、Hisashi Yamamoto、Hitosi Nozaki
DOI:10.1246/bcsj.50.1588
日期:1977.6
of a mixture of polyhalomethane and a carbonyl compound with a hindered lithium amide. The kinetically controlled, selective lithiation of the halide enables us to avoid a troublesome procedure involving preformed lithium carbenoid. The halide components examined are dichloromethane, dibromomethane, diiodomethane, chloroform, and bromoform, while the carbonyl ones are ubiquitous ketones and nonanal
通过用受阻氨基化锂处理多卤甲烷和羰基化合物的混合物,产生标题加合物。卤化物的动力学控制、选择性锂化使我们能够避免涉及预先形成的类卡宾酸锂的麻烦程序。检查的卤化物成分是二氯甲烷、二溴甲烷、二碘甲烷、氯仿和溴仿,而羰基成分是普遍存在的酮和壬醛。类似地从 3,3-二氯丙烯生成 gem-二氯烯丙基锂,此外,该过程成功地扩展到 α-卤代酯的 Darzens 型反应。