Selective Halogenation of 1-(2-Hydroxyphenyl)-3-phenylpropane-1,3-diones Using Phase Transfer Catalysis and Synthesis of 3-Chloro- and 3-Bromo-flavones.
β Scribed by J. K. Makrandi; Shashi Shashi; Surender Kumar
- Publisher
- John Wiley and Sons
- Year
- 2004
- Weight
- 81 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0931-7597
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β¦ Synopsis
Abstract
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The series of symmetrical bis-amides 3 was formed by the reaction of N-methylisatoic anhydride (1), with the diamines 2. Reaction of 3 with phosphorus trichloride led to the formation of the symmetrical bis-(1,3,2-benzodiazaphosphorinones) (4). 4 c, 4 d and 4 e were easily hydrolyzed in moist air, l