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COUMARONES
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COUMARONES or BENZOFURFURANES, organic compounds containing the ring system C6H4< O >CH. This ring system may be synthesized in many different ways, the chief methods employed being as follows: by the action of hot alcoholic potash on o-bromcoumarin(R. Fittig, Ann., 1883, 2r6, p. 162), CH:C-Br CH CH