Premium
Eco‐friendly HClO 4 –SiO 2 catalyzed synthesis of mono‐ and bis‐diaryl‐2h‐1,4 benzothiazines
Author(s) -
Ansari Mohd. Imran,
Shankar Ravi,
Hussain Mohd. Kamil,
Kant Ruchir,
Maulik Prakash R.,
Kumar K. Ravi,
Hajela K.
Publication year - 2011
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.795
Subject(s) - chemistry , perchloric acid , condensation , catalysis , cascade , condensation reaction , combinatorial chemistry , organic chemistry , chromatography , physics , thermodynamics
Mono‐ and bis‐diaryl‐2H‐1,4‐benzothiazines were obtained in quantitative yields through silica‐supported perchloric acid catalyzed reaction cascade of double condensation and 1,4 addition of diaroylacetylenes with 2‐aminothiophenol at room temperature. The structures were confirmed by spectroscopic analyses and X‐ray crystallographic studies. J. Heterocyclic Chem., (2011)