کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1353417 | 980647 | 2010 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quantum chemical modeling of chiral catalysis. Part 13. On the role of borane O-adducts in the enantioselective reduction of ketones catalyzed by chiral oxazaborolidines
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی معدنی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Plausible reactions of Lewis bases (ketones and ethers) with borane (O-adducts of chiral oxazaborolidines used as catalysts in the enantioselective reduction of ketones were investigated by means of ab initio MO methods. Properties of the O-adducts were found to be different from those of the corresponding N-adducts. The O-adducts were not able to form complexes with ketones and ethers similar to those of the corresponding N-adducts. Distances between the Lewis acidic and basic centers were much longer in the O-adducts than in the corresponding N-adducts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron: Asymmetry - Volume 4, Issue 9, 1993, Pages 2001-2010
Journal: Tetrahedron: Asymmetry - Volume 4, Issue 9, 1993, Pages 2001-2010
نویسندگان
Vesa Nevalainen,