Enantiomer separation of 2-halomandelic acids via diastereomeric salt formation with chiral N-substituted 2-amino-2-phenylethanols

Chirality. 2023 Nov 13. doi: 10.1002/chir.23630. Online ahead of print.ABSTRACTChiral N-substituted secondary 1,2-aminoalcohols have been developed for the enantioseparation of ortho-halomandelic acids (o-X-MAs) via diastereomeric salt formation. Two structural isomers, N-methyl-2-amino-1,2-diphenylethanol and N-benzyl-2-amino-2-phenylethanol, showed high separation abilities for o-X-MAs (X = Cl, Br, I). The chiral recognition mechanism was elucidated by crystallographic analysis of the less-soluble salts. The substituents on the nitrogen atom of the resolving agents and the inclusion of the crystallization solvent stabilized the salt and enhanced their separation ability.PMID:37957824 | DOI:10.1002/chir.23630
Source: Chirality - Category: Molecular Biology Authors: Source Type: research