A process is described for directly mono-brominating or mono-chlorinating .alpha.,.alpha.-dialkoxyalkyl or .alpha.,.alpha.-dialkoxycycloalkyl ketoximes in the .beta.-position. Particularly described is the direct chlorination of 2,2-dimethoxycyclohexanone oxime to produce 3-chloro-2,2-dimethoxycyclohexanone oxime, a useful intermediate in the preparation of L-lysine.
描述了一种直接对.alpha.,.alpha.-二烷氧基烷基或.alpha.,.alpha.-二烷氧基环烷基酮
肟在.beta.-位进行单
溴化或单
氯化的方法。特别描述了2,2-二甲氧基
环己酮肟的直接
氯化反应,生成3-
氯-2,2-二甲氧基
环己酮肟,这是制备
L-赖氨酸的有用中间体。