Preparation of 2-amino-5-formyl-4-halothiazoles

Details Preparation of 2-amino-5-formyl-4-halothiazoles Preparation of 2-amino-5-formyl-4-halothiazoles

1991-04-02

1993-04-27

Higel, Floyd D.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

534795, 534630, C07D27740, C07D277593

Patent

active

052063763

ABSTRACT:
A process for the preparation of 2-amino-5-formyl-4-halothiazoles by reaction, in a first stage, of thiourea with chloroacetic or bromoacetic acid in the presence of an N,N-disubstituted formamide, followed by treatment of the reaction mixture with a phosphoric trihalide and then with water in the presence of a base.

REFERENCES:
patent: 4395544 (1983-07-01), Egli
patent: 4505857 (1985-03-01), Egli
Ukr. Khim. Zh., vol. 27, pp. 680-681, 1961.
Chemical Abstract, 103: 104522h, pp. 581-582, D. G. Danielyan, et al., "Synthesis of Sulfur-Containing Organic Ligands of the Complexon Type".

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