Rhodium phosphine complexes as homogeneous catalysts. 14.1 1 For Part 13, see ref. [17]. Asymmetric hydrogenation of a Schiff base of acetophenone - effect of phosphine and catalyst structure on enantioselectivity

Sándor Vastag, József Bakos, Szilárd Tórös, Nicholas E. Takach, R. Bruce King, Bálint Heil, László Markó

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Abstract

Using catalysts prepared in situ from [Rh(NBD)Cl]2 and chiral diphosphines of the type Ph2PCHRCH2PPh2 (R = Ph, i-Pr, PhCH2) optical yields above 60% were achieved in the hydrogenation of PhMeCNCH2Ph. Although reproducibility of the results was poor, it can be concluded that the chiral diphosphines DIOP and diPAMP are much less effective, and that the halide ligand is necessary for good enantioselectivity.

Original languageEnglish
Pages (from-to)283-287
Number of pages5
JournalJournal of molecular catalysis
Volume22
Issue number3
DOIs
Publication statusPublished - Jan 1984

ASJC Scopus subject areas

  • Engineering(all)

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