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
从 β-二酮、β-酮基和 β-氰基酯以及 β- 制备 2,2-二取代苯并 [b] 噻吩 3(2H)-酮和 2-取代 3-羟基苯并 [b] 噻吩的简便方法氰基酮、丙二酸二乙酯、丙二腈和蒽酮已被开发出来。在三乙胺存在下用 2-(氯硫烷基)苯甲酰氯处理后,这些 C─H 酸的串联磺酰化 - 酰化会导致噻吩环的形成。