A Novel Preparation of Enamine Phosphonates from Ketene<i>O</i>,<i>N</i>-,<i>S</i>,<i>N</i>- and<i>N</i>,<i>N</i>-Acetals with Diethyl Phosphite
作者:Masahiro Fukuda、Kazuhito Kan、Yoshiki Okamoto、Hiroshi Sakurai
DOI:10.1246/bcsj.48.2103
日期:1975.7
1-Dimethylamino-1-methoxy-1-alkenes (ketene O,N-acetals), 1-dimethylamino-1-ethylthio-1-alkenes (ketene S,N-acetals) and 1,1-bis(dimethylamino)ethylene (ketene N,N-acetal) reacted with diethyl phosphite to give the corresponding (E)-diethyl 1-dimethylamino-1-alkenylphosphonates. Although ketene diethylacetal (ketene O,O-acetal) reacted with diethyl phosphite to give diethyl 1,1-diethoxy-1-ethylphosphonate
1-二甲氨基-1-甲氧基-1-烯烃(乙烯酮O,N-缩醛)、1-二甲氨基-1-乙硫基-1-烯烃(乙烯酮S,N-缩醛)和1,1-双(二甲氨基)乙烯(乙烯酮 N,N-乙缩醛)与亚磷酸二乙酯反应,得到相应的 (E)-二乙基 1-二甲氨基-1-烯基膦酸酯。尽管乙烯酮二乙基缩醛(乙烯酮 O,O-乙缩醛)与亚磷酸二乙酯反应得到 1,1-二乙氧基-1-乙基膦酸二乙酯,但 1,1-双(乙硫基)-1-烯烃(乙烯酮 S,S-缩醛)没有与亚磷酸二乙酯反应。