title: Synthesis of 4-methylene-4H-benzo[d][1,3]thiazines via a tandem reaction of 1-(2-alkynylphenyl)ketoximes with Lawesson's reagent.
abstract: 1-(2-Alkynylphenyl)ketoximes react with Lawesson's reagent catalyzed by InCl(3) and cyanuric chloride leading to 4-methylene-4H-benzo[d][1,3]thiazines in good yields. This tandem reaction proceeds with high efficiency through Beckmann rearrangement, thioamide formation, and intramolecular nucleophilic cyclization.
authors.affiliation: Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Chemistry & Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
authors.forename: Guanyinsheng
authors.initials: G
authors.lastname: Qiu
authors.forename: Yi
authors.initials: Y
authors.lastname: Hu
authors.forename: Qiuping
authors.initials: Q
authors.lastname: Ding
authors.forename: Yiyuan
authors.initials: Y
authors.lastname: Peng
authors.forename: Xiangzheng
authors.initials: X
authors.lastname: Hu
authors.forename: Jie
authors.initials: J
authors.lastname: Wu