Abstract: A continuous flow reactor without any moving parts to facilitate solid-liquid reaction without clogging is disclosed herein. It comprises plurality of identical cavities in series/sequence, each cavity being provided with: a pair of inlets at the top to allow entry of reactants into the reactor; an outlet at the bottom to allow the reactants to the next cavity for mixing; and a jacket covering around the cavities to provide heating or cooling effect as per the requirement. The outlet of the previous cavity is inclined at a suitable angle relative to the outlet of the next cavity to prevent clogging and facilitate efficient mixing of the reactants.

Abstract: The present disclosed an improved process for the synthesis of ivacaftor starting from indole acetic acid ester which can be performed in batch as well as continuous flow synthesis. The present invention further disclosed to a continuous process for the synthesis of compound of formula (II) or formula (III) from compound of formula (I) in continuous flow reactor.

Abstract: The present disclosed an improved process for the synthesis of ivacaftor starting from indole acetic acid ester which can be performed in batch as well as continuous flow synthesis. The present invention further disclosed to a continuous process for the synthesis of compound of formula (II) or formula (III) from compound of formula (I) in continuous flow reactor.