Synthesis of New Thiophene??Substituted 3, 3??Diphenyl??3H??naphtho [2, 1??b] pyrans by Cross??Coupling Reactions, Precursors of Photomodulated Materials

…, C Moustrou, A Samat, R Guglielmetti

文献索引：Frigoli, Michel; Moustrou, Corinne; Samat, Andre; Guglielmetti, Robert European Journal of Organic Chemistry, 2003 , # 15 p. 2799 - 2812

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被引用次数: 22

摘要

Abstract 3, 3-Diphenyl-3H-naphtho [2, 1-b] pyrans linked to one, two, or three thiophene nuclei in different positions of the naphthalene moiety (5, 6, 8, and 9) by a covalent bond have been prepared in good yields. A Suzuki cross-coupling reaction was used with two possible strategies: chromenization before the coupling with oligothiophenes or chromenization after the coupling, the main intermediates being the diphenyl propargylic ...