کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
153848 456541 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Studies on the catalytic activity of novel hybridized chiral organo-inorganic catalysts for epoxidation and alkylation reactions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Studies on the catalytic activity of novel hybridized chiral organo-inorganic catalysts for epoxidation and alkylation reactions
چکیده انگلیسی

Novel functionalized organo-inorganic chiral catalysts have been prepared in two steps from activated silica gel and chiral organic auxiliaries, such as (+)-cinchonine or (S)-(−)-nicotine. These new catalysts have been tested in a solid–liquid–liquid three-phase system for the asymmetric epoxidation of α,β-enones and the asymmetric alkylation reactions of glycine derivatives. The obtained stereoselectivities are negligible for the first case (ee <2%) and appreciable (ee 25–55%) for the second one.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 134, Issues 1–3, 1 November 2007, Pages 72–77
نویسندگان
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