Preparation and synthetic utility of 3-(benzotriazol-1-ylmethyl) areno-and-hetareno [b] thiophenes

…, VY Vvedensky, DO Tymoshenko

Index: Katritzky, Alan R.; Vvedensky, Vladimir Y.; Tymoshenko, Dmytro O. Journal of the Chemical Society. Perkin Transactions 1, 2001 , # 19 p. 2483 - 2486

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Abstract

3-(Functionalized-methyl)-and 3-alkenylareno (hetareno)[b] thiophenes 13–16 are prepared via the side chain elaboration of 3-(benzotriazol-1-ylmethyl) thiophenes 10d–f, h, readily available from the condensation of 1-benzotriazolyl-3-chloroacetone 7 with aromatic or heteroaromatic thiols followed by dehydrative cyclization of 1-(benzotriazol-1-yl)-3-[aryl (hetaryl) thio] acetones 9d–f, h.