[EN] PREPARATION METHOD OF 2-PHENYLACETOPHENONE DERIVATIVES<br/>[FR] PROCEDE DE PREPARATION DE DERIVES DE 2-PHENYLACETOPHENONE
申请人:HANBUL COSMETIC CO LTD
公开号:WO2005054169A1
公开(公告)日:2005-06-16
Disclosed is a preparation method of 2-phenylacetophenone derivatives which are used as key intermediates in total syntheses of coumestans and isoflavonoids such as coumestrol, genistein and daidzein which are phytoestrogens contained in soybean and black soybean. By using Fries rearrangement in the production, the 2-phenylacetophenone derivatives can be produced with much more simplified synthetic steps than prior art methods. In addition, the time of production is reduced due to short reaction time and easy purification in every step, thereby making it possible to produce 2-phenylacetophenone derivatives with high yields.
A facile KF/Al<sub>2</sub>O<sub>3</sub>mediated method for the synthesis of substituted 3-arylchromene-2-thiones
作者:Xiaowei Xu、Yongzhou Hu
DOI:10.1002/jhet.5570430111
日期:2006.1
A convenient and efficient method for the preparation of 3-aryl-chromene-2-thiones was reported. These compounds 2a-2o with various functional groups were synthesized in high yield by a KF/Al2O3 meditated reaction of deoxybenzoins with CS2 under mild conditions.
报道了一种方便有效的制备3-芳基-亚甲基-2-硫酮的方法。通过在温和条件下通过KF / Al 2 O 3介导的脱氧安息香与CS 2的反应,可以高收率合成具有各种官能团的这些化合物2a-2o。