A solution of 57.3 g (0.3 mole) of 5-bromo-2-furoic acid (see Vol. 1 of this work, p. 11),m.p. 182–183°, in 150 ml of dry benzene was prepared in a 300-ml round-bottomed flask fitted with reflux condenser protected by a calcium chloride tube, and 42.8 g (0.36 mole) of freshly distilled thionyl chloride was added.
KeywordsOrganic Chemistry Water Bath Calcium Chloride Sulfur Dioxide Heterocyclic Compound
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