deprotonation followed by oxidation and by asymmetric organocatalytic halogenation accompanied by elimination have been developed. These two-step one-pot transformations provide convenient access to optically active 1-phenylphosphin-2-en-4-one 1-sulfide and 1-phenylphosphin-2-en-4-one 1-oxide of 96 and 55% enantiomeric purities, respectively.
通过对映选择性去质子化,随后氧化和不对称有机催化卤化并伴随消除反应,已开发出两种合成方案,用于将1-
苯基膦烷-4-酮转化为新的P-立体异构1-
苯基膦-2-烯-4-酮。这些两步式一锅转化可方便地获得对映体纯度为96%和55%的旋光1-
苯基膦2-2-烯-4-酮1
硫化物和1-
苯基膦-2-烯-4-酮1氧化物, 分别。