Maekawa, Hirofumi published the artcileReductive carboxylation of aromatic esters by electron transfer from magnesium metal, Recommanded Product: Ethyl 3,5-difluorobenzoate, the publication is Tetrahedron Letters (2017), 58(3), 206-209, database is CAplus.
Magnesium-promoted reductive carboxylation of Et benzoates in the presence of chlorotrimethylsilane in N,N-dimethylformamide brought about a new carbon-carbon bond formation between the carbonyl carbon atom and carbon dioxide to give the corresponding benzoylformic acids in good yield. It is noteworthy that only Et benzoates with substituents at the meta-position were converted into benzoylformic acid derivatives Moreover, no mandelic acid was detected even under the reductive conditions. This result indicates that benzoylformic acid was obtained after hydrolysis of a carboxylated intermediate, which would exist as a stabilized structure in the reaction media.
Tetrahedron Letters published new progress about 350-19-6. 350-19-6 belongs to esters-buliding-blocks, auxiliary class Fluoride,Benzene,Ester, name is Ethyl 3,5-difluorobenzoate, and the molecular formula is C9H8F2O2, Recommanded Product: Ethyl 3,5-difluorobenzoate.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics