Yang, Quanlu published the artcileRecyclable palladium catalyst on graphene oxide for the C-C/C-N cross-coupling reactions of heteroaromatic sulfonates, Safety of 5-Nitro-2-phenylpyridine, the publication is Tetrahedron (2015), 71(36), 6124-6134, database is CAplus.
A well-defined heterogeneous palladium catalyst, graphene oxide grafted with palladium chloride (PdCl2), was prepared and found to be an effective catalyst for a carbon-carbon coupling (C-C bond formation), carbon-nitrogen coupling (C-N bond formation) of heteroaryl sulfonates with aryl boronic acids, terminal alkynes, amines, resp., leading to the desired coupling products in moderate to excellent yields. The catalyst was characterized by XRD, IR, SEM, TEM, XPS and ICP. It is worth noting that this catalyst offers a number of advantages such as high stability and negligible metal leaching. It also retains good activity for at least five successive runs without any addnl. activation treatment, showing a better performance than the well-known com. Pd/C catalysts. This approach would be very useful from a practical viewpoint.
Tetrahedron published new progress about 89076-64-2. 89076-64-2 belongs to pyridine-derivatives, auxiliary class Pyridine,Nitro Compound,Benzene, name is 5-Nitro-2-phenylpyridine, and the molecular formula is C11H8N2O2, Safety of 5-Nitro-2-phenylpyridine.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem