823-46-1Relevant academic research and scientific papers
Palladium-Catalyzed Oxidative Annulation of Sulfoximines and Arynes by C-H Functionalization as an Approach to Dibenzothiazines
Li, Jing,Li, Shan,Liu, Liansheng,Wang, Rong,Wei, Junfa,Yang, Yihui
, p. 7470 - 7474 (2020)
This work reports a novel and efficient palladium-catalyzed synthesis of tricyclic dibenzothiazines using easily prepared aryl sulfoximines and aryne precursors via C-H functionalization and cyclization. A mechanistic investigation indicated that the C-H bond cleavage at the position ortho to the sulfoximine group is the rate-determining step.
Rhodium-catalyzed oxidative annulation of sulfoximines and alkynes as an approach to 1,2-benzothiazines
Dong, Wanrong,Wang, Long,Parthasarathy, Kanniyappan,Pan, Fangfang,Bolm, Carsten
, p. 11573 - 11576 (2013)
Revitalization by oxygen: A rhodium(III)-catalyzed oxidative C-H/N-H activation/annulation sequence provided access to a variety of substituted 1,2-benzothiazine derivatives from readily available NH-sulfoximines and alkynes (see scheme; Cp=C5Me5). The oxidation system consisted of molecular oxygen in combination with a catalytic amount of Fe(OAc)2. Copyright
Ru (II)-Catalyzed Coupling-Cyclization of Sulfoximines with alpha-Carbonyl Sulfoxonium Ylides as an Approach to 1,2-Benzothiazines
Xie, Haisheng,Lan, Jianyong,Gui, Jiao,Chen, Fengjuan,Jiang, Huangfeng,Zeng, Wei
, p. 3534 - 3543 (2018/08/06)
A Ru(II)-catalyzed approach for the rapid assembly of 1,2-benzothiazines has been developed to enable the coupling-cyclization of aryl Csp2?H bonds with α-carbonyl sulfoxonium ylides via Csp2?H activation process. The present method could be further applied to the construction of the 4-substituted 1,2-benzothiazine skeletons. (Figure presented.).
