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Studies on the reaction of 3‐substituted‐4‐hydroxy‐2 H ‐1,2‐benzothiazine 1,1‐dioxides with aryl isocyanates and the synthesis of corresponding derivatives
Author(s) -
GuoFeng Zhao,
HuaZheng Yang
Publication year - 1996
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19960140513
Subject(s) - chemistry , benzothiazine , isocyanate , aryl , base (topology) , medicinal chemistry , organic chemistry , polyurethane , mathematical analysis , alkyl , mathematics
The reaction of 3‐substituted‐4‐hydroxy‐2 H ‐l,2‐benzothiazine 1,1‐dioxides with aryl isocyanate under different equivalents of strong base NaH was studied. Seventeen of new derivatives were obtained whose structures were characterized by 1 H NMR, IR, MS, elementary analysis and FeCl 3 test.