AIBN-Promoted Synthesis of Bibenzo[ b][1,4]thiazines by the Condensation of 2,2′-Dithiodianiline with Methyl Aryl Ketones
A series of bibenzo[b][1,4]thiazines with various functional groups has been synthesized by a free-radical condensation reaction. Bibenzo[b][1,4]thiazines were obtained in moderate to good yield (up to 85%) through a one-step reaction of readily available 2,2′-dithiodianiline and methyl aryl ketones with AIBN as radical initiator in HOAc. Bibenzo[b][1,4]thiazines exhibit diversiform solid-state packing.
A new synthetic approach towards the synthesis of 2-(3-aryl-2H,1,4-benzthiazin-2-yl)-3-aryl-2H-1,4-benzothiazines
Synthesis of 2-(3-Aryl-2H-1,4-benzthiazin-2-yl)-3-aryl-2H-1,4-benzothizines (3 a-e) from 3-aryl-5(4H)-isoxazolones (1 a-e) and 2-aminothiophenol (2).
Hanmantha Rao,Pandu Ranga Reddy,Veeranagaiah
p. 1715 - 1720
(2007/10/02)
New dyes based on 3-aryl-benzo- and -naphtho-1,4-thiazines
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
MacKenzie, Neil E.,Thomson, Ronald H.,Greenhalgh, Colin W.
p. 2923 - 2932
(2007/10/02)
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