Oxidative Addition Complexes as Precatalysts for Cross-Coupling Reactions Requiring Extremely Bulky Biarylphosphine Ligands was written by Ingoglia, Bryan T.;Buchwald, Stephen L.. And the article was included in Organic Letters in 2017.Formula: C10H9NO This article mentions the following:
Palladium-based oxidative addition complexes derived from aryl triflates or bromides and the bulky phosphine ligands AlPhos and t-BuBrettPhos were prepared as easily prepared, air-stable, and effective precatalysts for C-N, C-O, and C-F cross-coupling reactions with a variety of (hetero)arenes. These complexes offer a convenient alternative to previously developed classes of precatalysts, particularly in the case of the bulkiest biarylphosphine ligands, for which palladacycle-based precatalysts do not readily form. The structure of an AlPhos (trifluoromethylphenyl)palladium triflate complex benzene solvate was determined by X-ray crystallog. In the experiment, the researchers used many compounds, for example, 4-Methoxyisoquinoline (cas: 36034-54-5Formula: C10H9NO).
4-Methoxyisoquinoline (cas: 36034-54-5) belongs to isoquinoline derivatives. Being an analog of pyridine, isoquinoline is a weak base, with a pKa of 5.14. The Pomeranz–Fritsch reaction provides a method for the preparation of isoquinoline. This reaction uses a benzaldehyde and aminoacetoaldehyde diethyl acetal, which in an acid medium react to form isoquinoline.Formula: C10H9NO
Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem