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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 30, 2000 - Issue 3
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Original Articles

A Mild Method for the Preparation of 1,3,4-Oxadiazoles: Triflic Anhydride Promoted Cyclization of Diacylhydrazines

Spiros Liras Neurosciences Medicinal Chemistry Central Research Division Pfizer Inc, Groton, CT, 06340
,
Martin P. Allen Neurosciences Medicinal Chemistry Central Research Division Pfizer Inc, Groton, CT, 06340
&
Barb E. Segelstein Neurosciences Medicinal Chemistry Central Research Division Pfizer Inc, Groton, CT, 06340
Pages 437-443 | Received 07 Jun 1999, Published online: 04 Dec 2007
 
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Abstract

Diacylhydrazines undergo cyclization upon treatment with triflic anhydride and pyridine to form the corresponding 1,3,4-oxadiazoles in yields ranging from 70--95%.

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