Nakamura, Y and Takeuchi, S and Okumura, K and Ohgo, Y and Curran, DP
(2002)
Recyclable fluorous chiral ligands and catalysts: Asymmetric addition of diethylzinc to aromatic aldehydes catalyzed by fluorous BINOL-Ti complexes.
Tetrahedron, 58 (20).
3963 - 3969.
ISSN 0040-4020
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Abstract
Fluorous chiral BINOLs were prepared and used as the ligands for the titanium catalyzed asymmetric addition of Et2Zn to aromatic aldehydes. Consecutive reactions were examined by utilizing fluorous-organic biphase and fluorous solid phase extraction techniques. Enantioselectivities were similar in consecutive reactions and were close to that attained in the non-fluorous system. The solid phase extraction method also enabled us to perform a simultaneous screening procedure. © 2002 Elsevier Science Ltd. All rights reserved.
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