Takeuchi, Seiji published the artcileEnantioselective protonation of samarium enolates by a C2-symmetric chiral diol, HPLC of Formula: 5340-78-3, the publication is Tetrahedron: Asymmetry (1994), 5(9), 1763-80, database is CAplus.
High enantioselectivity (up to 97% ee) has been achieved in the protonation of samarium enolates which were generated by SmI2-mediated cross-coupling reaction between unsym. dialkylketenes and allyl iodide, using C2-sym. chiral diol (S,S)-o-C6H4(CH2OCH2CHPhOH)2 as a proton source. The stereochem. of enolate formation and of the enantioselective protonation is discussed.
Tetrahedron: Asymmetry published new progress about 5340-78-3. 5340-78-3 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is Ethyltert-butylacetate, and the molecular formula is C12H9N3O4, HPLC of Formula: 5340-78-3.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics