Wilson, Claire M. published the artcileEnantiospecific sp2-sp3 Coupling of ortho- and para-Phenols with Secondary and Tertiary Boronic Esters, COA of Formula: C6H5BBrClO2, the publication is Angewandte Chemie, International Edition (2017), 56(51), 16318-16322, database is CAplus and MEDLINE.
The coupling of ortho- and para-phenols with secondary and tertiary boronic esters has been explored. In the case of para-substituted phenols, after reaction of a dilithio phenolate species with a boronic ester, treatment with Ph3BiF2 or Martin’s sulfurane gave the coupled product with complete enantiospecificity. The methodol. was applied to the synthesis of the broad spectrum antibacterial natural product (-)-4-(1,5-dimethylhex-4-enyl)-2-methylphenol. For ortho-substituted phenols, initial incorporation of a benzotriazole on the phenol oxygen atom was required. Subsequent ortho-lithiation and borylation gave the coupled product, again with complete stereospecificity.
Angewandte Chemie, International Edition published new progress about 1451393-45-5. 1451393-45-5 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Bromide,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is (2-Bromo-4-chlorophenyl)boronic acid, and the molecular formula is C11H8O3, COA of Formula: C6H5BBrClO2.
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