Process for preparing 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-

Details Process for preparing 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3- Process for preparing 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-

1984-07-17

1986-05-06

Ford, John M.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

C07D27902

Patent

active

045873356

ABSTRACT:
The present invention refers to a new process for preparing 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-[N-(2-pyridinyl)carboxamide]-1,1 -dioxide, its phosphoric ester and the obtained phosphoric ester.

REFERENCES:
patent: 3838124 (1974-09-01), Matzner et al.
patent: 4100347 (1978-07-01), Hammen
patent: 4320126 (1982-03-01), Okabe et al.
Merck Index (10th Edition) p. 1060, (1983).

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