19111-35-4Relevant academic research and scientific papers
Use of (Z)-β-(2-fluorobenzenesulfonyl)vinylamines as novel synthons in the synthesis of 1,4-benzothiazine derivatives
Tsui, Gavinchit,Singjunla, Yuttapong,Lautens, Mark
, p. 1359 - 1364 (2012/06/30)
A novel synthetic route for arylated 1,4-benzothiazine derivatives has been developed. This method utilizes a key intramolecular nucleophilic aromatic substitution step of the corresponding (Z) - (2-fluorobenzenesulfonyl)vinylamine intermediate to construct the benzothiazine ring. A wide range of aryl and heteroaryl substituent groups can be installed from commercial boronic acids. Both mono- and diarylated products have been synthesized in good yields and with good functional group tolerance. Georg Thieme Verlag Stuttgart · New York.
High yield synthesis of 4H-1,4-benzothiazine-1,1-dioxide derivatives
De Montis, Stefania,Fattuoni, Claudia,Cadoni, Enzo,Cabiddu, Maria G.,Usai, Michele,Cabiddu, Salvatore
experimental part, p. 1445 - 1449 (2009/04/07)
(Chemical Equation Presented) 4H-1,4-Benzothiazine-1,1-dioxide derivatives were synthesized through a sequence of almost quantitative reactions. The commercial starting material 2-(methylsulfanyl)aniline was Boc-protected, N-acylated and oxidized at the sulfur atom to obtain a sulfonyl derivative. An anionic transposition of the acyl group followed by a simultaneous deprotection-cyclization gave the title products in excellent yields. All products and intermediates were fully characterized.
From phenothiazine to 3-phenyl-1,4-benzothiazine derivatives as inhibitors of the Staphylococcus aureus NorA multidrug efflux pump
Sabatini, Stefano,Kaatz, Glenn W.,Rossolini, Gian Maria,Brandini, David,Fravolini, Arnaldo
experimental part, p. 4321 - 4330 (2009/05/07)
Overexpression of efflux pumps is an important mechanism by which bacteria evade effects of substrate antimicrobial agents and inhibition of such pumps is a promising strategy to circumvent this resistance mechanism. NorA is a Staphylococcus aureus multid
Ortho Effects in Organic Molecules on Electron Impact. Part 22. Competing Oxygen Transfers from the Nitro Group to Sulphur and the Olefinic Double Bond in 2-Nitrophenyl Styryl Sulphides
Ramana, D. V.,Sundaram, N.,George, M.
, p. 161 - 164 (2007/10/02)
Double oxygen migration to sulphur from the ortho-nitro group leading to eliminations of SO2 and SO2H from the molecular ions and single oxygen transfer to the olefinic double bond in the side-chain giving rise to the most abundant ion at m/z 138 have bee
Synthesis of 4H-1,4-Benzothiazines via Lithiation Alpha to Sulphur of 2-Acylaminophenyl Alkyl Sulphides, Sulphoxides, and Sulphones
Babudri, Francesco,Florio, Saverio,Vitrani, Anna Maria,Nunno, Leonardo Di
, p. 1899 - 1903 (2007/10/02)
4H-1,4-Benzothiazines, their monoxides, and their dioxides are readily prepared via lithiation and intramolecular cyclisation of 2-acylaminophenyl alkyl sulphides, sulphoxides, and sulphones with lithium di-isopropylamide in tetrahydrofuran at -50 deg C.
New dyes based on 3-aryl-benzo- and -naphtho-1,4-thiazines
MacKenzie, Neil E.,Thomson, Ronald H.,Greenhalgh, Colin W.
, p. 2923 - 2932 (2007/10/02)
3-Aryl-2H-1,4-benzothiazines have been converted into cyanine dyes by condensing their hydroperchlorates with aldehydes, and into azo-compounds by coupling with reactive diazonium salts. The azo-compounds were also obtained by condensing arylglyoxal hydra
