A novel base-promoted synthesis of β-indolylketones via a three-component condensation under ultrasonic irradiation

A convenient, efficient, and practical method for the synthesis of β-indolylketones via a condensation of indole, aromatic aldehydes, and deoxybenzoin under ultrasonic irradiation was described. It provided a novel base-promoted approach for the one-pot synthesis of β-indolylketones.