Yoshida, Tatsuki published the artcileN-Methylphenothiazine S-Oxide Enabled Oxidative C(sp2)-C(sp2) Coupling of Boronic Acids with Organolithiums via Phenothiaziniums, Category: ethers-buliding-blocks, the publication is Organic Letters (2021), 23(24), 9664-9668, database is CAplus and MEDLINE.
The development of a transition-metal-free oxidative C(sp2)-C(sp2) coupling of readily available boronic acids RB(OH)2 (R = Ph, 2-naphthyl, 1-hexenyl, 2-(4-bromophenyl)vinyl, etc.) and organolithiums R1Li (R1 = 4-bromophenyl, vinyl, 2-naphthyl, etc.) via phenothiazinium ions I was reported. Various biaryl, styrene, and diene derivatives RR1 were obtained using this reaction system. The key to this process is N-methylphenothiazine S-oxide (PTZSO), which allows efficient conversion of boronic acids to phenothiazinium ions I. The mechanism of phenothiazinium formation using PTZSO was investigated using theor. calculations and experiments, which provided insight into the unique reactivity of PTZSO.
Organic Letters published new progress about 725251-81-0. 725251-81-0 belongs to ethers-buliding-blocks, auxiliary class Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is (3-Methoxy-5-methylphenyl)boronic acid, and the molecular formula is C8H5F3O3, Category: ethers-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem