Cobalt-catalyzed intermolecular C(sp(2))-O cross-coupling.
Cobalt(II)-catalyzed C(sp(2) )O cross-coupling between aryl/heteroaryl alcohols and vinyl/aryl halides in the presence of Cu(I) has been achieved under ligand-free conditions. In this reaction, copper plays a significant role in transmetalation rather than being directly involved in the CO coupling. This unique Co/Cu-dual catalyst system provides an easy access to a library of aryl-vinyl, heteroaryl-styryl, aryl-aryl, and heteroaryl-heteroaryl ethers in the absence of any ligand or additive.
Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032 (India).
Debasish
D
Kundu
Department of Chemistry, IIT-Guwahati, Guwahati-781039 (India).
Manisha
M
Tripathy
Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032 (India).
Pintu
P
Maity
Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032 (India). ocbcr@iacs.res.in.
Brindaban C
BC
Ranu
CO coupling; cobalt; copper; ethers; homogeneous catalysis