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Rami, Fabian; Bächtle, Franziska; Plietker, Bernd
Catalysis science & technology, 01/2020, Letnik: 10, Številka: 5Journal Article
The structurally defined Fe–H complex FeH(CO)(NO)(Ph 3 P) 2 catalyzes the efficient stereoselective hydroboration of a variety of internal alkynes using either pinacolborane (HBpin) or bis(pinacolato)diboron (B 2 pin 2 ) as a boron source. Upon hydroboration of unsymmetrical internal alkynes, a boron-source dependent regioselectivity was observed. Whereas the use of HBpin provides access to products that can be rationalized through a borylferration mechanism, a complementary regioselectivity was observed using B 2 pin 2 , which is indicative of a hydroferration mechanism.
