Iron-catalysed, general and operationally simple formal hydrogenation using Fe(OTf)3 and NaBH4 † †We dedicated this paper to Dr Stuart Warren on the occasion of his 75th birthday. ‡ ‡Electronic supplementary information (ESI) available. See DOI: 10.1039/c4ob00945b Click here for additional data file.
نویسندگان
چکیده
An operationally simple and environmentally benign formal hydrogenation protocol has been developed using highly abundant iron(iii) salts and an inexpensive, bench stable, stoichiometric reductant, NaBH4, in ethanol, under ambient conditions. This reaction has been applied to the reduction of terminal alkenes (22 examples, up to 95% yield) and nitro-groups (26 examples, up to 95% yield). Deuterium labelling studies indicate that this reaction proceeds via an ionic rather than radical mechanism.
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