Substituted dipyrromethanes and their preparation

Details Substituted dipyrromethanes and their preparation Substituted dipyrromethanes and their preparation

1993-10-26

1996-03-26

McKane, Joseph K.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20732

Patent

active

055022111

ABSTRACT:
New chemical compounds, bis(pyrrol-2-yl)halocarbylmethanes, also known as meso-halocarbyl dipyrromethanes, are made by recting pyrrole in either of two reaction schemes. Once such scheme converts pyrrole through an intermediate, a halocarbyl carbonyl pyrrole, to a 2-(1-hydroxyl-1-hydro-1-halocarbyl)pyrrole!, and then converts the latter to the desired halocarbyldipyrromethane; the last step in this scheme is a novel and useful method in itself. The other such sequence converts pyrrole, by reaction with a halocarbyl aldehyde, directly to the desired halocarbyl dipyrromethane.

REFERENCES:
patent: 4892941 (1990-01-01), Dolphin et al.
patent: 4900871 (1990-02-01), Ellis et al.
patent: 4970348 (1990-11-01), Ellis et al.
patent: 5077394 (1991-12-01), Dolphin et al.
patent: 5118886 (1992-06-01), Ellis et al.
patent: 5120882 (1992-06-01), Ellis et al.
patent: 5124449 (1992-06-01), Franck et al.
patent: 5241062 (1993-08-01), Wijeserkera et al.
patent: 5360880 (1994-11-01), Pashley et al.
Chong et al., "The Chemistry of Pyrrolic Compounds VII. Synthesis of 5-5'-Diformyldipyrromethanes" Aust. J. Chem., 22, 229-238 (1969).
CA 113:230523d Formation . . . cations. Allen et al., p. 648, 1990.
CA 115:231951v Selective . . . meso-arylporphyrins. Ema et al., p. 917, 1991.
Tetrahedron Letters, vol. 32, No. 35, pp. 4529-4532, Selective . . . Meso-Arylporphyrins, 1991.
Ellis et al., "Halogen Substituent Effects on the Catalytic Activity of Iron Porphyrin Complexes for Selective Air-Oxidation of Alkanes in the Liquid Phase", Cat. Lett., 3, 389 (1989).
Lyons et al., "Selective Low Temperature Hydroxylation of Isobutane By Molecular Oxygen Catalyzed by An Iron Perhaloporphyrin Complex", Cat. Lett., 8, 45 (1991).

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