کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5279113 1385618 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and hetero-Diels-Alder reactions of (E)-α-perfluoroalkanesulfonyl-α,β-unsaturated ketones
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Synthesis and hetero-Diels-Alder reactions of (E)-α-perfluoroalkanesulfonyl-α,β-unsaturated ketones
چکیده انگلیسی
Catalyzed by ammonium acetate, the Knoevenagel reactions of β-keto perfluoroalkanesulfones 1 with aromatic aldehydes 2 afforded α-perfluoroalkanesulfonyl-α,β-unsaturated ketones 4 in moderate to good yields. The possible mechanism for the reactions was proposed. These fluorine-containing α,β-unsaturated ketones, which are electron-poor 1-oxa-1,3-butadienes, could be used in inverse electron demand hetero Diels-Alder (HDA) reaction with electron-rich olefins to give tetrasubstituted dihydropyrans 6 in quantitative yields.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron Letters - Volume 47, Issue 28, 12 July 2006, Pages 4951-4955
نویسندگان
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