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Title: Mechanochemical Synthesis of Substituted 4H-3,1-Benzoxazin-4-ones, 2-Aminobenzoxazin-4-ones, and 2-Amino-4H-3,1-benzothiazin-4-ones Mediated by 2,4,6-Trichloro-1,3,5-triazine and Triphenylphosphine
Authors: Mookda Pattarawarapan
Sirawit Wet-Osot
Dolnapa Yamano
Wong Phakhodee
Keywords: Chemistry
Issue Date: 15-Mar-2017
Abstract: © Georg Thieme VerlagStuttgart · New York. A mild and convenient approach for the synthesis of 2-substituted 4H-3,1-benzoxazin-4-ones, 2-aminobenzoxazin-4-ones, and 2-amino-4H-3,1-benzothiazin-4-ones under solvent-assisted grinding is reported. In the presence of 2,4,6-trichloro-1,3,5-triazine and catalytic triphenylphosphine, cyclodehydration of N-substituted anthranilic acid derivatives proceeded rapidly within minutes at room temperature. The products were also obtained in good to excellent yields by using minimal amounts of solvent and inexpensive reagents.
ISSN: 14372096
Appears in Collections:CMUL: Journal Articles

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