名称:
Synthesis of Some 4-Chloro-5-cyano-2-dialkylamino-6H-1,3-oxazin-6-ones and their Reactions with Trialkyl Phosphites to Give Dialkyl (5-Cyano-2-dialkylamino-6-oxo-6H-1,3-oxazin-4-yl)phosphonates
摘要:
二氰基乙酸烷基酯和 N-(二氯亚甲基)二烷基氯化铵的盐类在氯仿中反应生成 4-氯-5-氰基-2-二烷基氨基-6H-1,3-恶嗪-6-酮。这些化合物的氯原子可以很容易地与三烷基亚磷酸发生迈克尔-阿尔布佐夫反应,从而以良好的收率得到二烷基(5-氰基-2-二烷基氨基-6-氧代-6-H-1,3-恶嗪-4-基)膦酸盐。