An efficient protocol for the straightforward synthesis of amides from readily available carboxylic acids and tetraalkylthiuram disulfides is presented. The reaction proceeds through direct cross‐coupling reactions promoted by catalytic amount of PPh₃ in DMSO. This protocol is compatible with a wide variety of electron‐donating and ‐withdrawing acids, which shows its practical synthetic value in organic synthesis.

中文翻译：

---

膦酸和四烷基秋兰姆二硫化物的膦促进的酰胺键形成反应

提出了从容易获得的羧酸和四烷基秋兰姆二硫化物直接合成酰胺的有效方案。反应通过在DMSO中催化量的PPh ₃促进的直接交叉偶联反应进行。该方案与多种给电子和吸电子酸兼容，显示了其在有机合成中的实用合成价值。