Electric Literature of 10495-73-5, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.10495-73-5, Name is 6-Bromo-2,2′-bipyridine, molecular formula is C10H7BrN2. In a Article，once mentioned of 10495-73-5
Chiral Pyridines: Optical Resolution of 1-(2-Pyridyl)- and 1-[6-(2,2?-Bipyridyl)]ethanols by Lipase-Catalyzed Enantioselective Acetylation
The resolution of racemic 1-(2-pyridyl)ethanols 2a-n, including the 2,2?-bipyridyl and isoquinolyl derivatives, by lipase-catalyzed asymmetric acetylation with vinyl acetate is reported. The reactions were carried out in diisopropyl ether at either room temperature or 60C using Candida antarctica lipase (CAL) to give (R)-acetate and unreacted (S)-alcohol with excellent enantiomeric purities in good yields. The reaction rate was relatively slow at room temperature for substrates bearing an sp3-type carbon at the 6-position on the pyridine ring, such as 2c, 2d, and 2e, and for those bearing 1-hydroxypropyl and allyl groups at the 2-position on the pyridine ring, such as 21 and 2m. In such cases, a higher temperature was required. Thus, when the reaction was conducted at 60C, it was accelerated 3- to 7-fold without losing the high enantiospecificity. However, the reaction of homoallylic alcohol 2n was not complete, even when the reaction was continued for a longer period of time at 60C. This enzymatic resolution can be used practically in a wide range of reaction scales from 10 mg to 10 g or more. This catalyst can be used repeatedly with a 5-10% loss of the initial activity with each use.
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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI