Highly efficient cyclotrimerization of isocyanates using N-heterocyclic olefins under bulk conditions. Issue 83 (2nd October 2019)

• Record Type: Journal Article
• Authors: Li, Chengkai; Zhao, Wuchao; He, Jianghua; Zhang, Yuetao
• Is Part Of: Chemical communications. Volume 55:Issue 83(2019)
• Page Start: 12563
• Page End: 12566
• Publication Date: 2019-10-02
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc06402h
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : N-Heterocyclic olefins promoted highly efficient, organocatalytic cyclotrimerization of isocyanates into isocyanurates under bulk conditions. Abstract : With a catalyst loading as low as 0.005%, high to excellent yields of isocyanurates could be achieved from N-heterocyclic olefin mediated organocatalytic cyclotrimerization of a wide range of isocyanates under bulk conditions. Experimental details coupled with structural characterization of the key intermediates led to comprehensive mechanistic studies of cyclotrimerization.