Yan-Ran Ma

Sulfamic Acid Catalysed Acetylation of Alcohols and Phenols with Acetic Anhydride

Abstract An easy acetylation of alcohols and phenols with acetic anhydride has been carried out in excellent yield under catalysis of sulfamic acid.

AN EFFICIENT AND FACILE PROCEDURE FOR THE DEPROTECTION OF 1,1-DIACETATES CATALYSED BY EXPANSIVE GRAPHITE

Abstract A rapid, efficient and high yield method for the deprotection of 1,1-diacetates is described which occurs under catalysis of expansive graphite in refluxing dichloromethane or benzene.

AN EFFICIENT AND CONVENIENT PROCEDURE FOR PREPARATION OF MANDELATES CATALYSED BY TiO2/SO2− 4 SOLID SUPERACID

An easy and efficient synthesis of mandelates in excellent yields from mandelic acid with alcohols catalysed by TiO2/SO2− 4 solid superacid.

A Highly Efficient and Chemoselective Method for Acetalization of Carbonyl Compounds Catalyzed by Solid Superacid

Abstract Various types of aldehydes and ketones could be converted to their corresponding diethyl acetals with triethylorthoformate in the presence of solid superacid in good to excellent yield under mild reaction conditions.

A RAPID AND EFFICIENT METHOD OF THIOACETALIZATION OF CARBONYL COMPOUNDS CATALYSED BY POCl3-MONTMORILLNITE

Aldehydes and ketones were thioactalized with 1,2- ethanedithiol in the presence POCl3-montmorillonite at room temperature in excellent yields.

A Practical and Efficient Procedure for Preparation of Diacetals from 2,2-Bis(hydroxymethyl)propane-1,3-diol with Aldehydes and Ketones Catalysed by Anhydrous Ferrous Sulfate

Synthesis of diacetals in excellent yields from aldehydes and ketones with 2,2-bis(hydroxymethyl)propane-1,3-diol is carried out in refluxing benzene or toluene with anhydrous ferrous sulfate as catalyst.