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1,4‐benzothiazine derivatives from 2‐aminobenzenethiol and hydrazonoyl halides
Author(s) -
Almirante Nicoletta,
Forti Luciana
Publication year - 1983
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570200617
Subject(s) - chemistry , halide , benzothiazine , alkyl , medicinal chemistry , polymer chemistry , organic chemistry
2‐Aminobenzenethiol was condensed with alkyl α‐chlorophenylhydrazonoglyoxylates yielding alkyl 2‐(2‐aminophenylthio)‐2‐arylhydrazonoglyoxylates which were cyclized to the corresponding 2‐arylhydrazono‐2,3‐dihydro‐4 H ‐1,4‐benzothiazin‐3‐ones. Starting from α‐chloro‐α‐arylhydrazonoacetones the corresponding 2‐arylhydrazono‐3‐methylbenzo‐1,4‐benzothiazines were formed.