699-19-4Relevant articles and documents
Regioselective 1,4-conjugate addition of grignard reagents to nitrodienes in the presence of catalytic amounts of Zn(II) salts
Dhakal, Ramesh C.,Dieter, R. Karl
supporting information, p. 1362 - 1365 (2014/04/03)
Grignard reagents undergo facile regioselective 1,4-conjugate addition to nitrodienes in the presence of catalytic amounts of Zn(II) salts with excellent yields. A wide range of ligands such as alkyl, aryl, heteroaryl, allyl, vinyl, 1-alkynyl, and alkoxy ligands were transferred, while a thiolate ligand afforded 1,6-regioselectivity. The reactions were successfully carried out on δ-alkyl- or aryl-substituted α,β,γ,δ-diunsaturated nitrodiene substrates. Regioselectivity is minimally influenced by temperature or choice of solvent.
Arylzinc species by microwave assisted Grignard formation-transmetallation sequence: Application in the Negishi coupling
Mutule, Ilga,Suna, Edgars
, p. 11168 - 11176 (2007/10/03)
Arylmagnesium species can be efficiently generated from magnesium turnings and aryl chlorides or aryl bromides under dielectric heating conditions. Subsequent microwave assisted transmetallation using ZnCl2-TMEDA afforded the corresponding arylzinc reagents. A sequential microwave assisted arylmagnesium formation-transmetallation-Negishi coupling protocol suitable for automated multiple parallel synthesis has been developed.