Appel reaction

Overview

The Appel reaction is an organic reaction that converts an alcohol into an alkyl chloride using triphenylphosphine and carbon tetrachloride. The use of carbon tetrabromide or bromine as a halide source will yield alkyl bromides, whereas using carbon tetraiodide, methyl iodide or iodine gives alkyl iodides. The reaction is credited to and named after Rolf Appel; however, it had been described earlier. The use of this reaction is becoming less common, due to carbon tetrachloride being restricted under the Montreal Protocol.

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