ãDirect Suzuki-Miyaura Coupling with Naphthalene-1,8-diaminato (dan)-Substituted Organoboronsã?was written by Yoshida, Hiroto; Seki, Michinari; Kamio, Shintaro; Tanaka, Hideya; Izumi, Yuki; Li, Jialun; Osaka, Itaru; Abe, Manabu; Andoh, Hiroki; Yajima, Tomoki; Tani, Tomohiro; Tsuchimoto, Teruhisa. Quality Control of 2-Bromo-5-methylpyridine And the article was included in ACS Catalysis in 2020. The article conveys some information:
The direct Suzuki-Miyaura coupling with “”protected”” R-B(dan) (dan = naphthalene-1,8-diaminato) (R = Ph, 4-MeOC6H4, 2-pyridyl) was demonstrated to smoothly occur without in situ deprotection of the B(dan) moiety. The use of KOt-Bu (Ba(OH)2 in some cases) as a base under anhydrous conditions is the key to the successful cross-coupling, where R-B(dan) is readily converted into a transmetalation-active borate-form, regardless of the well-accepted diminished boron-Lewis acidity. In addition to this study using 2-Bromo-5-methylpyridine, there are many other studies that have used 2-Bromo-5-methylpyridine(cas: 3510-66-5Quality Control of 2-Bromo-5-methylpyridine) was used in this study.
2-Bromo-5-methylpyridine(cas: 3510-66-5) belongs to pyridine. When pyridine is adsorbed on oxide surfaces or in porous materials, the following species are commonly observed: (i) pyridine coordinated to Lewis acid sites, (ii) pyridine H-bonded to weakly acidic hydroxyls, and (iii) protonated pyridine. At high coverage, physisorbed pyridine and protonated dimers can also be observed.Quality Control of 2-Bromo-5-methylpyridine