TETRAHEDRON, vol.70, pp.3707-3713, 2014 (SCI-Expanded)
Catalytic activities of (3S)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (THIQA)-based mono- and dipeptides and their L-proline analogs in asymmetric aldol reaction were investigated. THIQA-based dipeptides showed better enantioselectivity than proline analogs, whereas proline-based dipeptides gave higher yield in the aldol reaction of cyclohexanone with several aldehydes in dichloromethane at -10 degrees C in the presence of benzoic acid. (C) 2014 Elsevier Ltd. All rights reserved.