Preparation of thioflavones via thiophosphoryl chloride mediated cyclodehydration and thionation of 1-(2-hydroxyphenyl)-3-arylpropane-1,3-diones

Article abstract of DOI:10.1055/s-0030-1258343

A simple and convenient one-pot strategy for the preparation of thioflavones from 1,3-diketones is described. Cyclodehydration of a range of β-diketones and thionation of the resulting flavones was achieved using thiophosphoryl chloride (PSCl₃) which serves as both a catalyst and thionating agent. Georg Thieme Verlag Stuttgart · New York.