کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
66711 | 48446 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Is amine addition vital for highly enantioselective hydrogenation of α,β-unsaturated carboxylic acid over cinchonidine-modified palladium?
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Benzylamine (BA) is a commonly employed additive for the hydrogenation of α,β-unsaturated acids over the cinchonidine-modified palladium catalyst, but the BA addition effects largely depend on the reaction solvent. In toluene, BA is not required to obtain the high enantioselectivity. Quicker desorption of the product due to weaker acidity in toluene than in a commonly used wet dioxane reasonably explains both the kinetic properties and the product selectivities.
Enantioselective hydrogenation of unsaturated acids over the cinchonidine-modified Pd/C does not require amine addition in toluene due to weaker acidity of the product to cause the smooth desorption.Figure optionsDownload high-quality image (70 K)Download as PowerPoint slide
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 327, Issues 1–2, 15 July 2010, Pages 58–62
Journal: Journal of Molecular Catalysis A: Chemical - Volume 327, Issues 1–2, 15 July 2010, Pages 58–62
نویسندگان
Tae Yeon Kim, Takashi Sugimura,