I found the field of Chemistry very interesting. Saw the article Isothiourea-Catalyzed Atropselective Acylation of Biaryl Phenols via Sequential Desymmetrization/Kinetic Resolution published in 2020. Recommanded Product: Benzoic anhydride, Reprint Addresses Smith, AD (corresponding author), Univ St Andrews, EaStCHEM Sch Chem, St Andrews KY16 9ST, Fife, Scotland.; Cheong, PHY (corresponding author), Oregon State Univ, Dept Chem, 153 Gilbert Hall, Corvallis, OR 97331 USA.. The CAS is 93-97-0. Through research, I have a further understanding and discovery of Benzoic anhydride
Axially chiral phenols are attractive targets in organic synthesis. This motif is central to many natural products and widely used as precursors to, or directly, as chiral ligands and catalysts. Despite their utility few simple catalytic methods are available for their synthesis in high enantiopurity. Herein the atropselective acylation of a range of symmetric biaryl diols is investigated using isothiourea catalysis. Studies on a model biaryl diol substrate shows that the high product er observed in the process is a result of two successive enantioselective reactions consisting of an initial enantioselective desymmetrization coupled with a second chiroablative kinetic resolution. Extension of this process to a range of substrates, including a challenging tetraorthosubstituted biaryl diol, led to highly enantioenriched products (14 examples, up to 98:2 er), with either HyperB(TM) or B-TM identified as the optimal catalyst depending upon the substitution pattern within the substrate. Computation has been used to understand the factors that lead to high enantiocontrol in this process, with maintenance of planarity to maximize a 1,5-S…O interaction within the key acyl ammonium intermediate identified as the major feature that determines atropselective acylation and thus product enantioselectivity.
Recommanded Product: Benzoic anhydride. About Benzoic anhydride, If you have any questions, you can contact Munday, ES; Grove, MA; Feoktistova, T; Brueckner, AC; Walden, DM; Young, CM; Slawin, AMZ; Campbell, AD; Cheong, PHY; Smith, AD or concate me.
Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com