[GRAPHICS] In the presence of a catalytic amount of copper salts, cinnamyl halides undergo a regio- and enantioselective S(N)2' alkylation with dialkylzincs using chiral phosphoramidites as ligands. An S(N)2':S(N)2 ratio of 85:15 and enantiomeric excesses up to 77% for the chiral S(N)2' products are found, Variation of solvent and reaction temperature revealed that the highest regio- and enantioselectivities are found using coordinating solvents of -40 degreesC.
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Pohang Univ Sci & Technol POSTECH, Dept Chem, Pohang 37673, South KoreaPohang Univ Sci & Technol POSTECH, Dept Chem, Pohang 37673, South Korea
Kim, Gwanggyun
Kim, Doyoon
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Pohang Univ Sci & Technol POSTECH, Dept Chem, Pohang 37673, South KoreaPohang Univ Sci & Technol POSTECH, Dept Chem, Pohang 37673, South Korea
Kim, Doyoon
Cho, Seung Hwan
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Pohang Univ Sci & Technol POSTECH, Dept Chem, Pohang 37673, South Korea
Yonsei Univ, Inst Convergence Res & Educ Adv Technol I CREATE, Seoul 03722, South KoreaPohang Univ Sci & Technol POSTECH, Dept Chem, Pohang 37673, South Korea
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Sci Univ Tokyo, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanSci Univ Tokyo, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Suzuki, T
Narisada, N
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Sci Univ Tokyo, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanSci Univ Tokyo, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Narisada, N
Shibata, T
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Sci Univ Tokyo, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanSci Univ Tokyo, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Shibata, T
Soai, K
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Sci Univ Tokyo, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanSci Univ Tokyo, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan