D.sub.4 -symmetric porphyrin-based catalysts, processes for prep

Details D.sub.4 -symmetric porphyrin-based catalysts, processes for prep D.sub.4 -symmetric porphyrin-based catalysts, processes for prep

1994-09-14

1996-10-08

Shah, Mukund J.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

568910, C07D48722, C07C 2950

Patent

active

055632637

ABSTRACT:
The present invention provides novel D.sub.4 -symmetric chiral porphyrins derived from 1R-(+)-nopinone. The simplicity and flexibility of this synthetic protocol provides an attractive route to this novel class of porphyrins starting from cyclic ketones. For example, the chloromanganese (III) derivatives of the new macrocycles have utility as catalysts for the asymmetric epoxidation of aromatic alkenes.

REFERENCES:
patent: 5480986 (1996-01-01), Lyons et al.
Halterman et al. J. Org. Chem., 56, pp. 5253-5254 1991.
Cense et al. Chem. Abstr. vol. 92: 215411v 1980.
Chem. Comm. 1984, p. 207.

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