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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 18, 1988 - Issue 5
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Original Articles

Phase Transfer Catalytic Preparation of the Dipolar Aprotic Solvents DMI and DMPU

Eckehard V. Dehmlow Fakultät für Chemie, Universität Bielefeld, Universitätsstr. 25, D-4800, Bielefeld, 1
&
Y. Ramachandra Rao Fakultät für Chemie, Universität Bielefeld, Universitätsstr. 25, D-4800, Bielefeld, 1
Pages 487-494 | Published online: 06 Dec 2006
 
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Abstract

The title compounds are prepared by methylation of the respective cyclic ureas using Me2SO4/catalyst/powdered NaOH (for DMI) or K2CO3 (for DMPU). Improved procedures are communicated for the preparation of 2-imidazolidine and trimethylene urea.

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