Process for the preparation of iodinated contrast agents and int

Details Process for the preparation of iodinated contrast agents and int Process for the preparation of iodinated contrast agents and int

1997-02-07

1998-10-20

Raymond, Richard L.

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

Organic compounds

Amino nitrogen containing

424 9453, 424 9454, 549521, 549523, 564134, 564156, 564159, 564183, 564443, 564487, A61K 4904, C07C20968, C07C23112

Patent

active

058248218

ABSTRACT:
The invention provides a process for the production of a 2,3-dihydroxypropylamino compound, said process comprising the reaction steps of:

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Bernadou et al., "Redox Tautomerism" in High Valent Metal-oxo-aquo Complexes. Origin of the Oxygen Atom in Epoxidation Reactions Catalyzed by Water-Soluble Metalloporphyrins, J. Am. Chem. Soc. 116:9375-9376, 1994.
Haavaldsen et al., "X-Ray Contrast Agents: 1. Synthesis of Some Derivatives of 5-amino-2,4,6-triiodoisophthalamide", Acta Pharm. Suec. 20:219-232, 1983.
Palucki et al., Highly Enantioselective, Low-Temperature Epoxidation of Styrene, J. Am. Chem. Soc. 116:9333-9334, 1994.
Venturello et al., "Quaternary Ammonium Tetrakis (diperoxotungsto)phosphates(3-) as a New Class of Catalysts for Efficient Alkene Epoxidation with Hydrogen Peroxide", J. Org. Chem. 53:1553-1557, 1988.
Venturello et al., "A Convenient Catalytic Method for the Dihydroxylation of Alkenes by Hydrogen Peroxide", Synthesis Communications pp. 295-297, 1989.

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