کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5229129 1383653 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Highly stereoselective synthesis of para-substituted (E)-N-styrylcarbazoles via sequential silylative coupling–Hiyama coupling reaction
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Highly stereoselective synthesis of para-substituted (E)-N-styrylcarbazoles via sequential silylative coupling–Hiyama coupling reaction
چکیده انگلیسی

A series of new para-substituted (E)-(N)-styrylcarbazoles, i.e., eight (E)-9-[2-(aryl)ethenyl]-9H-carbazoles (5–12) and 1,4-bis[(E)-2-(9H-carbazol-9-yl)vinyl]benzene (13), have been synthesized in high yield and stereoselectively by a sequential silylative coupling–Hiyama coupling reaction, i.e., coupling of commercially available 9-vinylcarbazole with vinyltriethoxysilane or divinyltetramethyldisiloxane in the presence of [RuHCl(CO)(PCy3)2] (I), followed by Pd (II) catalyzed cross-coupling with para-substituted iodobenzenes.The tandem procedure has facilitated the synthesis of 13. X-ray structures of the intermediate silylvinylcarbazole (4), as well as products 12 and 13 have been obtained.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron - Volume 63, Issue 5, 29 January 2007, Pages 1107–1115