期刊
ACS CATALYSIS
卷 6, 期 10, 页码 7217-7221出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.6b02281
关键词
iron; catalysis; hydroboration; Markovnikov selectivity; NHC ligands
资金
- GlaxoSmithKline
- University of Edinburgh
- Royal Society
Two series of structurally related alkoxytethered NHC iron(II) complexes have been developed as catalysts for the regioselective hydroboration of alkenes. Significantly, Markonikov-selective alkene hydroboration with HBpin has been controllably achieved using an iron catalyst (11 examples, 35-90% isolated yield) with up to 37:1 branched:linear selectivity. anti-Markovnikov-selective alkene hydroboration was also achieved using HBcat and modification of the ligand backbone (6 examples, 44-71% yields). In both cases, ligand design has enabled activator-free low-oxidation state iron catalysis.
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