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Assembled catalysts of titanium and non-cross-linked chiral copolymers for an enantioselective carbonyl-ene reaction

✍ Scribed by Yoichi M.A. Yamada; Masato Ichinohe; Hideyo Takahashi; Shiro Ikegami

Publisher: Elsevier Science
Year: 2002
Tongue: French
Weight: 199 KB
Volume: 43
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(02)00427-6

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✦ Synopsis

New insoluble chiral catalysts were prepared from a self-assembly of Ti(O-i-Pr) 4 and non-cross-linked copolymers with (R)-binaphthol (BINOL) pendant groups. In the presence of one of the chiral catalysts, an enantioselective carbonyl-ene reaction proceeded at room temperature to give an adduct in 85% yield with 88% ee. This insoluble assembled catalyst was easily prepared and reusable.

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## Abstract For Abstract see ChemInform Abstract in Full Text.

Highly Active Catalyst for the Heterogen

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