Tetrahedron

Silica supported perchloric acid (HClO 4–SiO 2): an efficient reagent for the preparation of primary carbamates under solvent-free conditions

AR Modarresi-Alam, F Khamooshi, M Nasrollahzadeh…

Index: Modarresi-Alam, Ali Reza; Khamooshi, Ferydoon; Nasrollahzadeh, Mahmoud; Amirazizi, Homeyra Alsadat Tetrahedron, 2007 , vol. 63, # 36 p. 8723 - 8726

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Citation Number: 38

Abstract

The synthesis of primary carbamates from structurally diverse compounds containing a hydroxyl group has been performed in high yields and purity, and without any epimerization under solvent-free conditions using HClO4–SiO2 as a mild, convenient, and effective reagent. The procedure is operationally simple, efficient, and environmentally benign.

~75%

~77%

~83%

~79%

~79%

~73%

~80%

~83%

~77%

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