Gautam Chattopadhyay

Facile Method for the Conversion of Semicarbazones/Thiosemicarbazones into Azines (Under Microwave Irradiation) and Oxadiazoles (by Grinding)

Abstract In an effective transformation, semicarbazones/thiosemicarbazones are smoothly converted into azines under microwave irradition. Oxadiazoles are also obtained from semicarbazones by reaction with bromine generated in situ via a grinding reaction in the solid phase.

Brine-Mediated Efficient Benzoylation of Primary Amines and Amino Acids

Abstract Benzoylation of primary amines and amino acids is efficiently carried out in a brine solution using a stoichiometric amount of benzoyl chloride followed by trituration with aqueous saturated bicarbonate solution.

Hydrazine-hydroquinone complex as an efficient solid phase hydrazine donor: high yield synthesis of luminol and isoluminol

Isomeric aminophthalhydrazides, luminol and isoluminol were easily obtained from the corresponding aminophthalimides by solid phase hydrazinolysis with the hydrazine–-hydroquinone complex in high yields. Synthesis of a novel chemiluminescent agent, a heterocyclic analogue of isoluminol related to aminoimidazolecarboxamide, is also described.