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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 23, 1993 - Issue 3
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Original Articles

Synthesis of Isocyanates from Carboxylic Acids Using Diphenylphosphoryl Azide and 1,8-bis(Dimethylamino) naphthalene

Jeffrey W. Gilman Phillips Laboratory, OLAC PL/RKFE, Edwards AFB, CA 93523-5000
&
Yoshiko A. Otonari Phillips Laboratory, OLAC PL/RKFE, Edwards AFB, CA 93523-5000
Pages 335-341 | Received 13 Aug 1992, Published online: 23 Sep 2006
 
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Abstract

A simple phosgene-free method for the synthesis of high-purity isocyanates from carboxylic acids was developed using diphenylphosphoryl azide and 1,8-bis(dimethylamino) naphthalene. Yields for evaluated monoisocyanates ranged from 60.0% to 81.5%.

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