Cyclocondensation of α‐hydroxyimino‐β‐alkyl/arylimino‐β‐methylthioketones with hydrazine hydrate: Synthesis of 3(5)‐aryl‐5(3)‐alkyl/arylamino‐4‐nitroso (or amino) pyrazoles

Abstract

Abstract The title pyrazoles were synthesized through cyclocondensation of hydroxyiminoimine derivatives 1a‐j with hydrazine hydrate.