Synergistic promoting effect of ball milling and KF–alumina support for the green synthesis of benzothiazinones

[Display omitted] •Benzothiazinones are synthesized under solvent-free and ball mill conditions.•Reactions take place by using inexpensive KF–Al2O3 support.•The catalyst is recyclable.•Synthesis of several derivatives shows the generality and efficiency of the method. A solvent-free procedure was de...

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Bibliographic Details
Published in:Tetrahedron letters 2016-02, Vol.57 (5), p.529-532
Main Authors: Sharifi, Ali, Ansari, Mohammad, Darabi, Hossein Reza, Abaee, M. Saeed
Format: Article
Language:English
Subjects:
Ball mill
Ball milling
Benzothiazinones
Catalysts
Derivatives
Green chemistry
Heterocyclization
KF–alumina
Recycled
Synthesis
Synthesis (chemistry)
Tetrahedrons
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Summary:[Display omitted] •Benzothiazinones are synthesized under solvent-free and ball mill conditions.•Reactions take place by using inexpensive KF–Al2O3 support.•The catalyst is recyclable.•Synthesis of several derivatives shows the generality and efficiency of the method. A solvent-free procedure was developed for the reaction of 2-aminothiophenols with 2-bromoalkanoates, where KF–Al2O3 support and ball milling cooperatively lead to a green and efficient synthesis of several benzothiazinone derivatives in good to excellent yields. The catalyst could be recycled in further reactions while maintaining its activity.
ISSN:0040-4039
1873-3581
DOI:10.1016/j.tetlet.2015.12.078