Ch. Sanjeeva Reddy

TL;DR: Zirconium (IV) chloride is used as an efficient catalyst in the Pechmann condensation reaction of phenols with β-keto esters leading to the formation of coumarin derivatives in good yields under solvent-free conditions.

TL;DR: In this paper, a mild and efficient method was developed for the preparation of geminal-diacetates and dipivalates in high yields through a reaction of aldehydes with acetic anhydride or pivalic anhydrive using Zirconium (IV) chloride as a catalyst under solvent free conditions.

TL;DR: In this article, a series of novel methylene-bis-thiazolidinone derivatives was prepared by condensation of 5-(3-formyl-4-methoxybenzyl)-2-mETHObenzaldehyde 3 with mercapto acids and primary aromatic amines 4 in presence of ZnCl2 under both microwave irradiation and conventional heating conditions.

TL;DR: In this paper, a mild, efficient and chemoselective method was developed for the direct transformation of tert-butyldimethylsilyl and tetrahydropyranyl protected alcohols into the corresponding acetates with acetic anhydride and zirconium(IV) chloride as the catalyst in acetonitrile, in a one-pot reaction with high yields and short reaction times.

TL;DR: A series of novel bis-[3-arylmethylidenimino-1,3-thiazol-4-yl)-4-hydroxy-2H-chromen-2-one-6-yl]-methane compounds synthesized in good yields were found to be the most active against almost all the test bacteria.