908297-79-0Relevant articles and documents
Regio- and Stereoselective Synthesis of Functionalized Dihydropyridines, Pyridines, and 2H-Pyrans: Heck Coupling of Monocyclopropanated Heterocycles
Yedoyan, Julietta,Wurzer, Nikolai,Klimczak, Urszula,Ertl, Thomas,Reiser, Oliver
supporting information, p. 3594 - 3598 (2019/02/13)
A palladium-catalyzed coupling between aryl halides and monocyclopropanated pyrroles or furans has been developed, leading to valuable six-membered N- and O-heterocycles. As the key step, a selective cleavage of the non-activated endocyclic C?C bond of the 2-heterobicyclo-[3.1.0]hexane framework is achieved. The developed method offers access to highly functionalized piperidines, pyridines, and pyrans that are challenging to access by traditional methods.
An efficient Negishi cross-coupling reaction catalyzed by nickel(II) and diethyl phosphite
Gavryushin, Andrei,Kofink, Christiane,Manolikakes, Georg,Knochel, Paul
, p. 7521 - 7533 (2007/10/03)
A combination of diethyl phosphite-DMAP and Ni(II) salts forms a very effective catalytic system for the cross-coupling reactions of arylzinc halides with aryl, heteroaryl, and alkenyl bromides, chlorides, triflates, and nonaflates. The choice of solvent is quite important and the mixture of THF-N-ethylpyrrolidinone (NEP) (8:1) was found to be optimal. The reaction usually requires only 0.05 mol % of NiCl2 or Ni(acac)2 as catalyst and proceeds at room temperature within 1-48 h.