Process for the preparation of an intermediate useful in the syn

Details Process for the preparation of an intermediate useful in the syn Process for the preparation of an intermediate useful in the syn

1997-12-19

2000-08-08

Barts, Samuel

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

Organic compounds

Carboxylic acid esters

560254, C07C 6702

Patent

active

061004251

ABSTRACT:
A process for the preparation of the compound L-5-(2-acetoxypropionylamino)-2,4,6-triiodoisophthaloyl dichloride by reacting 5-amino-2,4,6-triiodoisophthaloyl dichloride with L-2-acetoxypropionyl chloride in N,N-dimethylacetamide as a solvent, characterized in that a catalytic amount of a lower alcohol is added to the reaction mixture.

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patent: 5644010 (1997-07-01), Kurihashi et al.
patent: 5686545 (1997-11-01), Kawashima et al.
patent: 5686603 (1997-11-01), Au et al.
patent: 5702872 (1997-12-01), Imai et al.
International Search Report, May 1998.

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