The effectiveness of MRI as a diagnostic tool have increased tremendously after the discovery of contrast agents (CA). Most of the clinically approved CAs at present are relaxation based and...

Various functionalised 4-amino-2-(methylthio)quinolines are synthesised through triflic acid-mediated N-heteroannulation of α-functionalized-β-anilino-β-(methylthio)acrylonitriles for the first time. The N-heteroannulation process is highly chemoselective and mild reaction conditions. However, this process fails in...

Various 2‐aryl‐3‐arylazoacrylonitriles are synthesized while attempting the intramolecular N‐arylation of 5‐aminopyrazoles, using the hypervalent iodine reagent. The synthesis involves phenyl iodine diacetate‐assisted ring opening of 5‐aminopyrazoles at room temperature. A plausible mechanism for the formation of azoalkenes is proposed.