Construction of chiral Betti base precursors containing a congested quaternary stereogenic center via chiral phosphoric acid-catalyzed arylation of isoindolinone-derived ketimines was written by Glavac, Danijel;Gredicak, Matija. And the article was included in New Journal of Chemistry in 2022.Electric Literature of C13H12O2 The following contents are mentioned in the article:
Synthesis of enantioenriched Betti base precursors containing a congested quaternary stereocenter was described. In a chiral phosphoric acid-catalyzed reaction, a series of in-situ generated isoindolinone-derived ketimines and phenol derivatives yield products in good to excellent yields and moderate enantioselectivities. Conversion of the obtained products into chiral Betti bases with the retention of the optical purity was demonstrated. This study involved multiple reactions and reactants, such as 4-Benzyloxyphenol (cas: 103-16-2Electric Literature of C13H12O2).
4-Benzyloxyphenol (cas: 103-16-2) belongs to ethers. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Electric Literature of C13H12O2
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem