Expeditious Method for Synthesis of Symmetrical 1, 3??Disubstituted Ureas and Thioureas

…, SM Abdul Hai, RA Khan, KM Khan, N Afza…

Index: Perveen, Shahnaz; Abdul Hai, Syed M.; Khan, Rashid A.; Khan, Khalid Mohammed; Afza, Nighat; Sarfaraz, Tahira B. Synthetic Communications, 2005 , vol. 35, # 12 p. 1663 - 1674

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Citation Number: 22

Abstract

Abstract Symmetrical 1, 3??disubstituted ureas and symmetrical thioureas have been synthesized from corresponding isocyanates, diisocyanates, and isothiocyanates by a new versatile, simple, and quick method in the presence of tertiary amines at room temperature. The method under discussion has several advantages over the existing techniques, as it is simple to carry out, does not require complicated equipment, has a simple workup, and ...

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