Willgerodt-Kindler reaction at room temperature: Synthesis of thioamides from aromatic aldehydes and cyclic secondary amines
作者:Arun D. Kale、Yogesh A. Tayade、Sachin D. Mahale、Rahul D. Patil、Dipak S. Dalal
DOI:10.1016/j.tet.2019.130575
日期:2019.10
out Willgerodt-Kindler reaction of aromatic aldehydes at room temperature. At 120 °C, it is catalyst free reaction with lower reaction time whereas at room temperature, due to the additional amine molecule, Willgerodt-Kindler reaction of aromatic aldehydes is successfully carried out at room temperature. On gram-scale, the reaction is successfully attempted under both conditions with good yields.
已经开发了一种在室温和120°C下在DMSO中合成硫酰胺衍生物的简单方法。在两种条件下,通过取代的芳族醛,元素硫粉和环状仲胺之间的一锅三组分反应,共制备了27种化合物。通过优化硫粉和胺的摩尔比,我们已经成功地在室温下进行了芳族醛的Willgerodt-Kindler反应。在120°C时,它是无催化剂反应,反应时间较短,而在室温下,由于胺分子的增加,芳族醛的Willgerodt-Kindler反应在室温下成功进行。以克为单位,在两种条件下均以高收率成功地进行了反应。