Synthesis of Highly Substituted Fluoro Chromenones in a “One‐Pot Four‐ Component Strategy” Using NFSI as a Fluorinating Reagent

Abstract

AbstractAn efficient one pot four component strategy has been developed for the synthesis of highly substituted fluoro chromenone derivatives (5 a‐p) in good yields from β‐aryl thio acetanilide, aldehydes, cyclic 1,3‐diketones and NFSI (N‐Fluorobenzenesulfonimide) in presence of water. The fluoro imino chromenone intermediate 6 is isolated under the inert condition in high yield.