期刊
TETRAHEDRON LETTERS
卷 43, 期 15, 页码 2789-2792出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(02)00383-0
关键词
BisbenzodioxanPhos; hydrogenation; beta-keto esters; naproxen
The new chiral diphosphine ligand [(5.6) (5'.6')-bis(1.2-ethylenedioxy)biphenyl-2.2'-diyl]bis(diphenylphosphine) (Bisben-zodioxanPhos) has been successfully prepared and used in ruthenium-catalyzed asymmetric hydrogenation of 2-(6'-methoxy-2'-naphthyl)propenoic acid and beta-keto esters with high enantioselectivity (92.2% and up to 99.5% ee. respectively). (C) 2002 Published by Elsevier Science Ltd.
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