Addition of Nucleophiles to Ketones with Polymer-Supported
Sulfonamide

V. J. Forrat; D. J. Ramón; M. Yus

doi:10.1055/s-0029-1217226

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Synfacts 2009(7): 0811-0811
DOI: 10.1055/s-0029-1217226

Polymer-Supported Synthesis

Addition of Nucleophiles to Ketones with Polymer-Supported Sulfonamide

Contributor(s): Yasuhiro Uozumi, Yoshinori Hirai
V. J. Forrat, D. J. Ramón*, M. Yus*
Universidad de Alicante, Spain

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Publikationsverlauf

Publikationsdatum:
22. Juni 2009 (online)

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Significance

Polymer-supported chiral disulfon-amide 3 was prepared by mixing of compound 1 and polymer 2 in the presence of AIBN in THF. The polymer-supported chiral disulfonamide 3 assisted the enantioselective ethylation of ketones with Et₂Zn in the presence of Ti(Oi-Pr)₄ to give the corresponding products (29-94% yield, up to >99% ee).