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
![Graphical abstract: Preparation and synthetic utility of 3-(benzotriazol-1-ylmethyl)areno- and -hetareno[b]thiophenes](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=B008612F&imageInfo.ImageIdentifier.Year=2001)
A. R. Katritzky, V. Y. Vvedensky and D. O. Tymoshenko, J. Chem. Soc., Perkin Trans. 1, 2001, 2483 DOI: 10.1039/B008612F
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