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Synthesis of 1,6-, 2,7-, 3,8-, and 4,9-isomers of didodecyl[1] benzothieno[3,2-b][1]benzothiophenes

par Ruzié, Christian ;Karpinska, Jolanta ;Kennedy, Alan Robert;Geerts, Yves
Référence Journal of organic chemistry, 78, 15, page (7741-7748)
Publication Publié, 2013

Article révisé par les pairs

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Résumé :

The synthesis of 1,6-, 2,7-, 3,8-, and 4,9-isomers of dibromo- and didodecyl[1]benzothieno[3,2-b][1]benzothiophenes, via the stilbene pathway, is described. Starting from the synthesis of bromo-2-(methylthio)benzaldehydes, a series of functionalization, McMurry coupling, and finalising cyclization reactions were explored. The stereochemistry of the cyclization mechanism was investigated. Using this methodology didodecyl[1]benzothieno[3,2-b][1] benzothiophenes were formed in overall yields of 5-32%. © 2013 American Chemical Society.