中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4'-氯-2'-羟基苯乙酮 | 4-chloro-2-hydroxy acetophenone | 6921-66-0 | C8H7ClO2 | 170.595 |
A metal- and oxidant-free method for preparing 3-selenocyanato-substituted chromones from 2-hydroxyphenyl enaminones by using a newly developed electrophilic selenocyanating reagent is reported. A series of 3-selenocyanato- or 3-thiocyanato-substituted chromones, as well as 3-selenocyanato- or 3-thiocyanato-substituted quinolinones was obtained in good to excellent yields under grinding reaction conditions. The generality and utility of this approach were demonstrated by a scale-up reaction and transformations of one of the products.
A convenient and efficient method for the synthesis of difluoro/trifluoromethyl carbinol-containing chromone derivatives has been developed.