SDS of cas: 1082066-29-2On October 2, 2019 ,《Para-Selective, Iridium-Catalyzed C-H Borylations of Sulfated Phenols, Benzyl Alcohols, and Anilines Directed by Ion-Pair Electrostatic Interactions》 was published in Journal of the American Chemical Society. The article was written by Montero Bastidas, Jose R.; Oleskey, Thomas J.; Miller, Susanne L.; Smith, Milton R.; Maleczka, Robert E.. The article contains the following contents:
Para C-H borylations (CHB) of tetraalkylammonium sulfates [R4N][ArOSO3] (R = n-Pr, Bu) and sulfamates [Bu4N][ArNHSO3] have been achieved using bipyridine-ligated Ir boryl catalysts, 4,4′-R2bpy/[Ir(cod)(OMe)]2/B2pin2, yielding borylated phenols 4-(pinB)-RC6H3OH (R = halo, Me, CN, CF3, CF3O, OMe), together with minor amounts of meta-isomers. Selectivities can be modulated by both the length of the alkyl groups in the tetraalkylammonium cations and the substituents on the bipyridine ligands. Ion pairing, where the alkyl groups of the cation shield the meta C-H bonds in the counteranions, is proposed to account for para selectivity. The 4,4′-dimethoxy-2,2′-bipyridine ligand gave superior selectivities. In the experiment, the researchers used many compounds, for example, (2-Fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methanol(cas: 1082066-29-2SDS of cas: 1082066-29-2)
(2-Fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methanol(cas: 1082066-29-2) belongs to organoboron compounds. Organoboron compounds are versatile intermediates and as such are some of the most important classes of reagents in modern organic chemistry. Organoboron compounds are less toxic than organostannane reagents, and unlike alkynylzinc and magnesium, many organoboron compounds possess remarkable oxidative and thermal stabilities. SDS of cas: 1082066-29-2
Referemce:
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