An efficient and practical synthesis of bis(indolyl)methanes catalyzed by aminosulfonic acid under ultrasound
Author/Authors :
Li، نويسنده , , Ji-Tai and Dai، نويسنده , , Hong-Guang and Xu، نويسنده , , Wenzhi and Li، نويسنده , , Tong-Shuang and Li، نويسنده ,
Pages :
4
From page :
24
To page :
27
Abstract :
Synthesis of bis(indolyl)methanes via electrophilic substitution reactions of indoles with aromatic aldehydes and ketones catalyzed by aminosulfonic acid was carried out in 23–96% yield at 30–38 °C in EtOH aqueous solution under ultrasound irradiation.
