Synthesis of substituted 1,2,4‐oxadiazoles from substituted acid chlorides and amidoximes under mild conditions

Substituted amidoximes have been synthesized, isolated and converted into substituted oxadiazoles as a novel heterocyclic compounds under mild conditions in good to excellent yield.     

Phenacylsulfonylacetic acid methyl ester‐synthon for 1,2,3‐selena/thiadiazoles and 2H‐diazaphospholes

A new class of 1,2,3‐selena/thiadiazoles and 2H‐diazaphospholes were synthesized by exploiting α‐ketomethylene group in phenacylsulfonylacetic acid methyl ester.     

Michael adducts of vinyl sulfones — source for thiadiazoles,oxadiazoles and triazoles

A new and novel five membered heterocycles thiadiazoles, oxadiazoles and triazoles were prepared from methyl 4‐arylsulfonyl‐3‐arylbutyrate and methyl 4‐arylmethanesulfonyl‐3‐arylbutyrate.     

An efficient synthesis of highly substituted pyrrole and bis pyrrole derivatives

An efficient synthesis of highly substituted pyrrole and bis pyrrole derivatives is reported.     

Michael addition of dimedone with α,β‐unsaturated ketones: Synthesis of quinoline and chromene derivatives

A series of quinoline and chromene derivatives has been synthesized by Michael addition of dimedone 1 with 2‐aroyl‐3‐arylacrylonitrile 2 and study of absorption and fluorescence maxima of quinolines.