کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1346023 980235 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel case of 1,3-asymmetric induction in rhodium-catalyzed hydroformylation of an allylic double bond using perbenzylated C-glucosides as chiral directors
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
A novel case of 1,3-asymmetric induction in rhodium-catalyzed hydroformylation of an allylic double bond using perbenzylated C-glucosides as chiral directors
چکیده انگلیسی

1-(2′,3′,4′,6′-Tetra-O-benzyl-α-d-glucopyranosyl)-2-propene 1a and 1-(2′,3′,4′,6′-tetra-O-benzyl-β-d-glucopyranosyl)-2-propene 1b were hydroformylated at different temperatures affording linear and branched aldehydes in either a 1:1 or 2:1 regioisomeric ratio, depending on the stereochemistry of the starting substrate. The diastereoisomeric ratio of the branched isomer depended on the reaction temperature as well as the alkene structure, the highest value (85:15) being obtained in the case of hydroformylation of the α-isomer at 0 °C.

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1-(2′,3′,4′,6′-Tetra-O-benzyl-α-d-glucopyranosyl)-3-formylpropaneC38H42O6[α]D22=+36.8 (c 1.1, CH2Cl2)

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron: Asymmetry - Volume 16, Issue 22, 14 November 2005, Pages 3661–3666
نویسندگان
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