Efficient and recoverable novel pyranothiazol Pd (II), Cu (II) and Fe(III) catalysts in simple synthesis of polyfunctionalized pyrroles: Under mild conditions using ultrasonic irradiationMahmoud Abd El Aleem Ali Ali El‐Remaily, Ahmed M. Abu‐Dief, Tahani M. Bawazeer et al.|Applied Organometallic Chemistry|2021Cited by 67