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Title: Studies on the synthesis of 6-(substituted pyridyl)-2H- [1,4]benzoxazin-3(4H)-one derivatives
Authors: Krishnan, V S H
Chowdary, K S
Dubey, P K
Naidu, A
Vijaya, S
Issue Date: Jul-2001
Publisher: NISCAIR-CSIR, India
Abstract: 6-Chloroacetyl-2H-[1,4]benzoxazin-3(4H)-one 1 is heated with pyridine to obtain 2H-[1,4]benzoxazin-3,4-dihydro-3-oxo-6-acetyl pyridinium chloride 2. 2 on reaction with a variety of chalcones 3 in the presence of ammonium acetate in acetic acid gives 6-(substituted pyridyl)-2H-[1,4]benzoxazin-3(4H)-one 4. Alkylation of 4a (R = R' = Ph) with various alkylating agents yields N-alkyl 6-[2-(4,6-diphenylpyridyl)]-2H-[1,4]benzoxazin-3- one 5, whose structures are supported by spectral and analytical data.
Page(s): 603-607
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.40B(07) [July 2001]

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