Journal article

Facile synthesis and antibacterial evaluation of 2-phenyl-3, 4-dihydro-2h-1, 3-benzoxazine derivatives


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Author list: Kaone Chaka, Ishmael B Masesane and Maitshwarelo I Matsheka

Publication year: 2019

Journal name in source: BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA

Volume number: 7

Issue number: 1

Start page: 1365

End page: 1374

Number of pages: 10

ISSN: 2349-8528

eISSN: 2321-4902

URL: https://www.chemijournal.com/archives/?year=2019&vol=7&issue=1&ArticleId=4903&si=false

Languages: English



A method for the synthesis of 3,4-dihydro-1,3-benzoxazines that involves the neat reaction of salicylaldehyde and benzyl amine to give an imine followed by reduction of the imine to a 2-(aminomethyl) phenol derivative and subsequently cyclisation through a reaction with various benzaldehydes is reported. The highlights of this procedure include the short reaction times, easy work-up methods and the reliance on recrystallization for the purification of the products. The 1, 3-benzoxazines were prepared in yields of 51-75% over the three steps. The prepared 1, 3-benzoxazines showed promising activity against gram negative bacteria Salmonella enterica, and Klebsiella pneumonia as compared to the reference antibiotic gentamycin.


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Last updated on 2022-29-11 at 11:34