A Simple Route to Benzo[<i>b</i>]thiophenes: Sulfanylation–Acylation of <i>C─H</i> Acids with 2-(Chlorosulfanyl)benzoyl Chloride
作者:Jacek Młochowski、Piotr Potaczek
DOI:10.1080/10426500902855117
日期:2009.5.14
the preparation of 2,2-disubstituted benzo[b]thiophen3(2H)-ones and 2-substituted 3-hydroxybenzo[b]thiophenes from β-diketones, β-keto- and β-cyanoesters, and β-cyanoketones, diethyl malonate, malonitrile, and anthrone has been developed. The tandem sulfanylation–acylation of these C─H acids resulting in the formation of a thiophene ring occurs upon treatment with 2-(chlorosulfanyl)benzoyl chloride in