B. Vittal Rao

One-Pot Synthesis of α-Aminophosphonates: An Inexpensive Approach

Abstract A one-pot synthesis of the α-aminophosphonates from aldehydes and amines using trimethyl phosphite catalyzed by aluminum chloride at ambient temperature is reported. #IICT Communication No. 20412.

Copper(II)chloride Catalyzed Tetrahydropyranylation of Alcohols

Abstract A simple and efficient methodology for the tetrahydropyranylation of alcohols using catalytic amount of copper(II)chloride in dichloromethane is described. The yields obtained are good to excellent.

An Inexpensive Protocol for Biginelli Reaction

Abstract A one‐pot synthesis of the 3,4‐dihydropyrimidin‐2(1H)‐ones catalysed by cupric chloride–lithium chloride combination catalyst system in high yields is reported. #IICT communication number: 020612.

Simple Protocol for the Synthesis of 3,4‐Dihydropyrimidin‐2(1H)‐ones Using SnCl2 · 2H2O–LiCl as an Inexpensive Catalyst System

Abstract A one‐pot synthesis of the 3,4‐dihydropyrimidin‐2(1H)‐ones catalyzed by tin chloride–lithium chloride combination catalyst system involving three component heteroannular cyclization is reported. #IICT communication number 020713.

Stannous Chloride Dihydrate : A New Catalyst For The Tetrahydropyranylation Of Alcohols

Abstract Catalytic Stannous chloride dihydrate in polar aprotic solvents like chloroform efficiently catalyse the tetrahydropyranylation of alcohols in a short time under mild conditions.

CuCl2.2H2O — MeOH. a New Reagent System for the Deprotection of Tetrahydropyranyl Ethers

Abstract Cupric chloride dihydrate in methanol cleave the tetrahydropyranyl ethers to the corresponding alcohols in excellent yields under mild conditions.

(Bromodimethyl)sulfonium Bromide–Mediated Thiolysis of Epoxides: An Easy Access to β-Hydroxy Sulfides and Benzoxathiepinones in Solvent-Free Conditions

A mild, rapid and highly regioselective opening of epoxides by mercaptans to β-hydroxy sulfides and benzoxathiepinones has been achieved in excellent yields, using catalytic amount of (bromodimethyl)sulfonium bromide in solvent free reaction conditions.

A New Stereoselective Synthesis of Ostopanic Acid via β-Chloro Vinyl Ketone

Abstract A simple and effective stereoselective synthesis of Ostopanic acid I using β-chloro vinyl ketone as a key synthon obtained from diethyl pimeliate is described.

Bromodimethyl)sulfonium Bromide Mediated Rapid and Facile Protection of Amines

Abstract A new clean protocol for protection of aryl and aliphatic amines with t-butoxycarbonyl (t-BOC) and benzyloxycarbonyl (Cbz) catalyzed by simple (bromodimethyl)sulfonium bromide has been developed. Rapid protection of amines in excellent yields in totally solvent-free conditions has been achieved.

(Bromodimethyl)sulfonium bromide mediated Michael addition of thiols to α, β-unsaturated ketones

A mild and rapid Michael addition of mercaptans to α, β-unsaturated ketones has been achieved in excellent yields, using catalytic amount of (bromodimethyl)sulfonium bromide.