Visible-light-induced cyclization of cyclic N-sulfonyl ketimines to N-sulfonamide fused imidazolidines. Issue 18 (21st April 2022)

• Record Type: Journal Article
• Authors: Wang, Xiaotong; Shi, Anzai; Huang, Xian-Qiang; Chen, Xiaolan; Li, Tiesheng; Qu, Lingbo; Yu, Bing
• Is Part Of: Organic & biomolecular chemistry. Volume 20:Issue 18(2022)
• Page Start: 3798
• Page End: 3802
• Publication Date: 2022-04-21
• Subjects: Chemistry, Organic -- Periodicals; Bioorganic chemistry -- Periodicals; Chemistry, Physical organic -- Periodicals; 547
• DOI: 10.1039/d2ob00460g
• Languages: English
• ISSNs: 1477-0520

Abstract

Abstract : An eosin Y-catalyzed annulation reaction of cyclic N -sulfonyl ketimines and N -arylglycines was reported to construct N -sulfonamide-fused imidazolidines under visible-light induced metal-free conditions. Abstract : A visible-light-induced metal-free cascade cyclization of cyclic N -sulfonyl ketimines with N -arylglycines for the construction of N -sulfonamide-fused imidazolidines was developed. The procedure employed 3 mol% of eosin Y as the photocatalyst at room temperature under visible light irradiation, providing various N -sulfonamide-fused imidazolidines in good yields (32 examples, up to 86% yields).