How would you reduce an aryl OH group? Traditionally, a palladium catalyst, a mild source of hydride, and a triflate derivative are used in solution. A more modern alternative is presented that is not only economical but heterogeneous as well. Nickel-on-graphite (Ni/Cg) is introduced as a very inexpensive catalyst that reduces aryl tosylates and mesylates with excellent functional group tolerance.
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Lipshutz et al. (2005) studied this question.
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