SYNTHESIS OF 1,2-BENZISOTHIAZOLES BY THE OXIDATIVE RING CONTRACTION OF 2-ARYL- AND 4-ARYL-3,4-DIHYDRO-2H-1,3-BENZOTHIAZINES

DOI: 10.1016/S0040-4020(01)80102-2

Source and publish data:

Tetrahedron p. 2731 - 2736 (1989)

Update date:2022-07-29

Topics:

Authors:

Szabo, Janos

Szuecs, Erzsebet

Fodor, Lajos

Bernath, Gabor

Sohar, Pal

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Article abstract of DOI:10.1016/S0040-4020(01)80102-2

Sodium periodate oxidation of 6,7-dimethoxy-2-aryl-3,4-dihydro-2H-1,3-benzothiazines (1a-e) gave 5,6-dimethoxy-1,2-benzisothiazole (4).The N-substituted analogues (6a-c) and the 4-aryl isomers of the latter (11a,b) furnished 2-substituted 1,2-benzisothiaz

Full text of DOI:10.1016/S0040-4020(01)80102-2

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