1-substituted-2-diphenylphosphinonaphthalene and transition meta

Details 1-substituted-2-diphenylphosphinonaphthalene and transition meta 1-substituted-2-diphenylphosphinonaphthalene and transition meta

1997-03-07

1998-05-26

Nazario-Gonzalez, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548402, 548577, 548578, 556 21, 556136, 556138, C07F 902, C07F 1500, C07D20700

Patent

active

057567603

ABSTRACT:
A 1-substituted-2-diphenylphosphinonaphthalene represented by formula (I): ##STR1## wherein at least one of R.sup.1, R.sup.2, R.sup.3, and R.sup.4, which may be the same or different, represents a lower alkyl group having 1 to 4 carbon atoms which may be substituted with an alkoxy group, a phenyl group or --OR.sup.6 (wherein R.sup.6 represents a hydrogen atom, a lower alkyl group having 1 to 4 carbon atoms or an alcohol-protective group), and the rest of them represent a hydrogen atom; A represents a single bond or a methylene group; and R.sup.5 represents a substituted or unsubstituted phenyl group; and a transition metal complex comprising the 1-substituted-2-diphenylphosphinonaphthalene as a ligand. The transition metal complex is useful as a catalyst in asymmetric synthesis.

REFERENCES:
patent: 5510503 (1996-04-01), Laue et al.
patent: 5523437 (1996-06-01), Hayashi et al.

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