2021
Verónica Díaz-Juárez, Carlos Ernesto Reyes-Escobedo, Mario Pérez-Venegas, Eusebio Juaristi,, Salvador Pérez-Estrada, Susana Rojas-Lima, Heraclio López-Ruiz. Proline and 1-(2-(benzoxazole-2-yl)phenyl)-3-phenylthiourea supramolecular organocatalyst in asymmetric aldol reactions. Tetrahedron Letters, 2021, 79, 153301
Abstract
In this work we report the (S)-proline-thiourea 1 host?guest complex as an efficient catalyst in the enantioselective aldol rection of ketones with aldehydes. This host?guest complex performs well at 0 C, in a non-polar solvent, such as toluene, or under solvent-less conditions affording high yields (75%-86%), enantioselectivities (er > 87%) and diastereoselectivities (ds > 92%) in the asymmetric aldol reaction of ketones with aldehydes.
Et3B, an Efficient Mediator for Xanthate Transfer Based Radical Processes
Synthesis and Structures of some Lithium and Sodium (Aminoalcoholato)hydrido Aluminates
Et3, and efficient Mediator for Xanthate Transfer Based Radical Processes.
Diastereoselective alkylation of chiral glycinate derivatives containing the ?-phenylethyl group.
X-ray crystallographic study of neutral boron chelates with ?-diketones and tropolone
Diastereoselective Synthesis of Spiro-?-lactams via Staudinger Reactio