Thornbury, Richard T. published the artcileThe development and mechanistic investigation of a palladium-catalyzed 1,3-arylfluorination of chromenes, Quality Control of 1877-71-0, the publication is Chemical Science (2017), 8(4), 2890-2897, database is CAplus and MEDLINE.
A mild palladium-catalyzed ligand-controlled regioselective 1,3-arylfluorination of 2[H]-chromenes was developed. The products with a syn-1,3 substitution pattern were obtained with high enantiomeric excess using a PyrOx ligand, wherein the utility of these pyranyl-fluorides was further demonstrated through their participation in a diastereoselective C-C bond forming reaction. Ligand dependent divergent formation of both the 1,3- and 1,2- alkene difunctionalization products was observed The nature of this bifurcation was investigated through exptl. studies in combination with computational and statistical anal. tools. Ultimately, the site selectivity was found to rely on ligand denticity and metal electrophilicity, the electronics of the boronic acid, and the donor ability of the directing group in the substrate.
Chemical Science published new progress about 1877-71-0. 1877-71-0 belongs to esters-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Ester, name is 3-(Methoxycarbonyl)benzoic acid, and the molecular formula is C65H82N2O18S2, Quality Control of 1877-71-0.
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https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics