A mixture of ethyl formate and a catalytic amount of silica sulfuric acid or Al(HSO4)3 as suitable formylating systems can formylate various alcohols to their corresponding formate ester derivatives under mild, nearly neutral and heterogeneous conditions at room temperature with good to excellent yields.

Preparation methods of the titled compounds are mentioned and an easy, environment friendly, common and one-pot synthesis of these compounds is described.

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ABSTRACT. Prepartion of the title compounds at 0-5 o C is reported along with their AM1 SCF MO calculations. The advantage of this procedure is the hight purity of the products.

Iodogen is employed as an efficient oxidizing agent for the conversion of urazoles and bis-urazoles into the corresponding 1,2,4-triazoles in good to excellent yields under mild heterogeneous conditions at room temperature.