کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
67270 48474 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of 2-substituted 3,4-dihydro-2H-1,4-benzoxazines through ligandless copper-catalyzed cyclization of hydroxysulfonamides under phase-transfer catalysis conditions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Synthesis of 2-substituted 3,4-dihydro-2H-1,4-benzoxazines through ligandless copper-catalyzed cyclization of hydroxysulfonamides under phase-transfer catalysis conditions
چکیده انگلیسی

The ring closing under solid–liquid phase-transfer catalysis conditions (SL-PTC) of hydroxysulfonamides 7, bearing a leaving group in the ortho position of the aryl moiety, generates 2-substituted-3,4-dihydro-2H-1,4-benzoxazines 4 in good to excellent yields. In the case of hydroxysulfonamides 7 bearing a bromine or iodine atom as a leaving group, a copper(I) salt is used to enable the reaction to occur.

The ring closing under solid–liquid phase-transfer catalysis (SL-PTC) conditions of hydroxysulfonamides 7, bearing a leaving group in the ortho position of the aryl moiety, generates benzoxazines 4 in good to excellent yields. In the case of hydroxysulfonamides 7 bearing a bromine or iodine atom as a leaving group, a copper(I) salt is used.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 288, Issues 1–2, 3 June 2008, Pages 28–32
نویسندگان
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