کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
57251 47112 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Some factors affecting the catalytic efficiency in the enantioselective cyclopropanation of olefins by the use of insoluble polystyrene-bound bisoxazoline-copper(I) complex
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Some factors affecting the catalytic efficiency in the enantioselective cyclopropanation of olefins by the use of insoluble polystyrene-bound bisoxazoline-copper(I) complex
چکیده انگلیسی

A new insoluble polymer-bound bisoxazoline (IPB-box) was prepared by grafting a suitable chiral ligand derivative onto a commercial Merrifield resin. The material obtained by this route was employed in the asymmetric copper-catalyzed olefin cyclopropanation, obtaining good activity and enantioselectivity values (54–84% yield, 71–93% ee) for a range of substrates. In addition, some key factors required for the development of effective IPB-box systems are discussed, including the local ligand symmetry and the influence of immobilization technique and catalyst loading.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 140, Issues 1–2, 15 February 2009, Pages 51–57
نویسندگان
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