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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 26, 1996 - Issue 23
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Original Articles

Synthesis of Densely Functionalized N-Hydroxypyrroles Mediated by Vinyltriphenylphosphonium Salt

Issa Yavari Chemistry Department, Tarbiat Modarres University, P. O. Box 14155 - 4838, Tehran, Iran
,
Ali Ramazani Chemistry Department, Tarbiat Modarres University, P. O. Box 14155 - 4838, Tehran, Iran
&
Asieh Yahya-Zadeh Chemistry Department, Tarbiat Modarres University, P. O. Box 14155 - 4838, Tehran, Iran
Pages 4495-4499 | Received 01 Mar 1996, Published online: 23 Aug 2006
 
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Abstract

Protonation of the reactive 1:1 intermediates produced in the reaction between triphenylphosphine and dialkyl acetylenedicarboxlates by butane-2,3-dione monoxime leads to vinyltriphenylphosphonium salts, which undergo intramolecular Wittig reaction to produce dialkyl 2,3-dimethyl-N-hydroxypyrrole-4,5-dicarboxylates in fairly high yields.

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