Bulletin of the Chemical Society of Japan p. 739 - 746 (1984)
Update date:2022-08-03
Topics:
Yatagai
Zama
Yamagishi
Hida
New chiral diphosphinites were prepared starting from ( plus )-diethyl tartrate. The asymmetric hydrogenation of dehydroamino acids, itaconic acid and dehydrodipeptides was studied using Rh(I)-diphosphinite catalysts. In the hydrogenation of dehydroamino acid derivatives, an introduction of omega -(dimethylamino)alkyl group in the ligands did not raise the optical yield. By the use of Rh(I)-diphosphinite having 3-(dimethylamino)propyl group the inversion of the preferred product was observed. 19 refs.
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(2006)Doi:10.1055/s-1983-30497
(1983)Doi:10.1134/S1070363214010186
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