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Phosphorus, Sulfur, and Silicon and the Related Elements Volume 184, 2009 - Issue 9
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Original Articles

Novel Phosphoranes Containing Urea Derivatives: Synthesis and Characterization

Davood Aghaei Afshar Department of Chemistry, Shahid Bahonar University, Kerman, Iran
&
Mohammad Reza Islami Department of Chemistry, Shahid Bahonar University, Kerman, Iran
Pages 2238-2246 | Received 09 Jul 2008, Accepted 03 Sep 2008, Published online: 04 Sep 2009
 
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Abstract

N-Acetyl-N′-methyl urea or ethyl urea in the presence of an acetylenic ester and a desired phosphine functioned as a NH-acid and added to the triple bond in a chemoselective reaction. One of the obtained products underwent lactonization to the corresponding imidazolidine containing ylide moiety when heated in the presence of a base such as triethyl amine.

We thank the Shahid Bahonar University for financial support as a Grant-in-Aid for Scientific Research.

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