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Title: An efficient synthesis of 3-bromoflavones under solvent free conditions using grinding technique
Authors: Jakhar, Komal
Makrandi, J K
Keywords: 1-(2-Hydroxyphenyl)-3-phenylpropane-1,3-diones;Ammonium bromide;Ammonium persulphate;Grinding technique;3-bromoflavones
Issue Date: May-2012
Publisher: NISCAIR-CSIR, India
Abstract: Selective bromination of 1-(2-hydroxyphenyl)-3-phenylpro¬≠pane-1,3-diones has been carried out with ammonium bromide and ammonium persulphate at room temperature using grinding technique under solvent free conditions to give 2-bromo derivatives which on cyclodehydration with p-toluenesulphonic acid under grinding conditions give 3-bromoflavones. Also, flavones on bromination using above mentioned conditions give 3-bromoflavones directly.
Page(s): 770-773
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.51B(05) [May 2012]

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