A Well‐Defined Calcium Compound Catalyzes Trimerization of Arylisocyanates into 1, 3, 5‐Triarylisocyanurates. Issue 11 (6th April 2022)

• Record Type: Journal Article
• Authors: Kumar, Rohit; Sharma, Vishal; Jain, Shailja; Sharma, Himanshu; Vanka, Kumar; Sen, Sakya S.
• Is Part Of: ChemCatChem. Volume 14:Issue 11(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-04-06
• Subjects: Calcium -- Tetradentate ligand -- Cyclotrimerization -- Isocyanurates; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.202101788
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: We report the synthesis of a calcium complex (2 ) bearing a tetradentate monoanionic ligand with a diaminoethane core and phenolate and pyridine peripheral donors. Single crystal X‐ray studies on 2 revealed that LiI was also co‐crystallized, leading to a four‐membered ring with four different elements. 2 was found to be an efficient catalyst for the cyclotrimerization of a variety of aromatic isocyanates under mild conditions. Abstract : A well‐defined calcium compound (2 ) was prepared using a tetra‐dentate ligand. 2 was found to catalyze the cyclotrimerization of aryl isocyanates to isocyanurates under ambient conditions with excellent yields.