کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5217148 | 1383286 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Higher enantioselectivities in thiourea-catalyzed Michael additions under solvent-free conditions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Higher enantioselectivities in thiourea-catalyzed Michael additions under solvent-free conditions Higher enantioselectivities in thiourea-catalyzed Michael additions under solvent-free conditions](/preview/png/5217148.png)
چکیده انگلیسی
Enantioselective Michael additions catalyzed by hydrogen-bonding catalysts produce many important compounds. Solvent-free reaction conditions in a ball mill can provide an improved enantioselectivity over the reaction in solution, due to lack of disruptive solvation of reagents. A range of 15 structurally different hydrogen-bonding organocatalysts were tested in two Michael additions to β-nitrostyrene under solvent-free conditions and compared with corresponding experiments in solution. With several thiourea catalysts, these Michael additions proceeded with higher enantioselectivities under solvent-free conditions than in solution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron - Volume 70, Issue 4, 28 January 2014, Pages 901-905
Journal: Tetrahedron - Volume 70, Issue 4, 28 January 2014, Pages 901-905
نویسندگان
Martina Hestericová, Radovan Å ebesta,