Synthetic Communications p. 1811 - 1818 (1997)
Update date:2022-08-03
Topics:
Pathak, Vijai N.
Pathak, Ranjana
Gupta, Ragini
Oza, Chandra K.
Treatment of 1H-4,5-dihydro-3-aryl-5-(2-hydroxyaryl)pyrazole with o-dibromoxylene under liquid-liquid phase transfer catalytic conditions using tetra-n-butylammonium hydrogen sulphate or [18]-crown-6 as PT catalyst, benzene/chloroform as organic phase and 50% aqueous potassium hydroxide as second phase, afforded novel 2,5,9,10-tetrahydro[7,8-g]benzo-8-arylpyrazolo[4,5-e][1,5-b]benzoxazon ines.
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