Process for the production of 2,3-Dihydro-4H-1,4-benzothiazines

Details Process for the production of 2,3-Dihydro-4H-1,4-benzothiazines Process for the production of 2,3-Dihydro-4H-1,4-benzothiazines

1982-03-18

1983-07-12

Ford, John M.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

C07D27916

Patent

active

043932061

ABSTRACT:
Process for the preparation of 2,3-Dihydro-4H-1,4-benzothiazines by cyclisation of suitable 2-(2-Hydroxyalkyl)-thioanilines under elimination of water in the presence of phosphorous acid.

REFERENCES:
Monatshefte Fur Chemie, vol. 88, Edition 5, pp. 822-829, (1957).

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