Synthesis of Benzo[ <i>e</i> ][1,3]-thiazine-2,4-diones via PPh <sub>3</sub> -Promoted [4 + 2] Annulation between Benzo[ <i>c</i> ][1,2]dithiol-3-ones and Carbamates
Chuan‐Chuan Wang, Mengru Ren, Qinglong Wang, Yao-Jie Xue, Zhi‐Hao Wang, Xue‐Hui Hou, Zhiwei Ma, Yingxin Xie, Yajing Chen
Abstract
An efficient construction of benzo[ e ][1,3]-thiazine-2,4-diones through PPh 3 -promoted [4 + 2] annulation between benzo[ c ][1,2]dithiol-3-ones and carbamates is described herein. This novel strategy is distinguished by mild reaction conditions, convenient operation, excellent yields, wide functional group compatibility, accessible scalability, and practical transformations.
Topics & Concepts
AnnulationChemistryYield (engineering)Combinatorial chemistryGroup (periodic table)Reaction conditionsOrganic chemistryStereochemistryCatalysisFunctional groupSynthesis and Reactivity of Sulfur-Containing CompoundsSulfur-Based Synthesis TechniquesSynthesis of heterocyclic compounds