Amino acids derived chiral bifunctional (thio)urea tertiary-amines catalyzed asymmetric henry reaction of α-trifluoromethy ketones
作者:Xiangyu Meng、Yueyang Luo、Gang Zhao
DOI:10.1016/j.tetlet.2020.152485
日期:2020.11
An asymmetric Henry reaction of α-trifluoromethyl ketones with nitroalkanes afforded α-trifluoromethyl-β-nitro alcohols catalyzed by novel bifunctional (thio)urea tertiary-amines derived from amino acids, in good yields with high enantioselectivities, which could be converted into promising structure motifs in pharmaceutical chemistry.
Synthesis of chiral tertiary trifluoromethyl alcohols by asymmetric nitroaldol reaction with a Cu(ii)-bisoxazolidine catalyst
作者:Hanhui Xu、Christian Wolf
DOI:10.1039/c0cc02378g
日期:——
A highly enantioselective and diastereoselectivecopper(II)-bisoxazolidine catalyzednitroaldolreaction with aliphatic and aromatic trifluoromethyl ketones is described.
Dual stereocontrol over the Henry reaction using a light- and heat-triggered organocatalyst
作者:Matea Vlatković、Luca Bernardi、Edwin Otten、Ben L. Feringa
DOI:10.1039/c4cc00794h
日期:——
Here we present a novel dynamic organocatalyst, based on a first-generation molecular motor core, able to control the stereochemical outcome of the Henry reaction using both light and heat as external stimuli.
of an equivalent amount of 1,8-bis(dimethylamino)naphthalene in anhydrous acetonitrile. The nitroaldol adducts were reduced to the corresponding aminoalcohols by nickel boride (nickel chloride/sodium tetrahydroborate) in methanol. alcohols - aminoalcohols - chiral lanthanide complexes - enantioselective catalysis - fluorine