Zhu, Yasheng published the artcileEnantioselective Construction of Single and Vicinal All-Carbon Quaternary Stereocenters through Ion Pair Catalyzed 1,6-Conjugate Addition, Formula: C6H8O3, the publication is Organic Letters (2021), 23(18), 7248-7253, database is CAplus and MEDLINE.
An asym. 1,6-conjugate addition to presynthesized δ-aryl-δ-cyano disubstituted para-quinone methides I (R = H, 3-Me, 3-bromo; Ar = Ph, 4-methylphenyl, 2-naphthyl, etc.) through bifunctional phosphonium-amide promoted ion pair catalysis for acyclic all-carbon quaternary stereocenter construction has been described. Both acyclic and cyclic 1,3-dicarbonyls CH2(C(O)OR1)2 (R1 = Ph, 2-methylphenyl, benzyl, etc.)/II (R2 = Me, Et, Bu, allyl) participate in asym. alkylation reaction, furnishing a wide array of diarylmethanes bearing a single acyclic or vicinal cyclic and acyclic quaternary carbon stereocenters III/IV in high efficiency with excellent stereoselectivity. Computational studies elucidate the origin of enantioselectivity.
Organic Letters published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C38H74Cl2N2O4, Formula: C6H8O3.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics