A Palladium-catalyzed 1,2-addition reaction of carboxylic acids to glyoxylic acidesters is reported. This method provides access to mandelic acid derivatives from simple, readily available starting materials in good yields. Carboxylic acids are utilized as more sustainable alternative to common organometallic nucleophiles.
Combination of Lithium Chloride and Hexafluoroisopropanol for Friedel-Crafts Reactions
作者:Jieping Zhu、Matthieu Willot、JinChun Chen
DOI:10.1055/s-0028-1087566
日期:2009.3
A combination of weak Lewis acid (LiCl) and weak Bronsted acid (hexafluoroisopropanol, HFIP) promotes efficiently the Friedel-Craftsreaction of electron-rich arom. compds. with Et glyoxylate. [on SciFinder (R)]
Autocatalytic one pot orchestration for the synthesis of α-arylated, α-amino esters
作者:Stéphane P. Roche、Shyam S. Samanta、Marine M. J. Gosselin
DOI:10.1039/c3cc48884e
日期:——
α-Arylated, α-amino esters are synthesized in one pot, using an AcOH/AcCl autocatalytic system, which promotes simultaneous dehydration–activation before Friedel–Crafts functionalization.
Room temperature MgI2-catalyzed Friedel–Crafts reaction between electron-rich (het)arenes and ethyl glyoxylate
作者:Mikhail N. Feofanov、Boris A. Lozhkin、Maksim V. Anokhin、Alexey D. Averin、Irina P. Beletskaya
DOI:10.1016/j.mencom.2018.07.030
日期:2018.7
Magnesium iodide-catalyzed addition of electron-rich (het)arenes to ethyl glyoxylate proceeds at room temperature with high chemoselectivity to afford ethyl 2-(het)aryl- 2-hydroxyacetates in yields up to 95%.
Identification of a New Zinc Binding Chemotype by Fragment Screening
作者:Panagiotis K. Chrysanthopoulos、Prashant Mujumdar、Lucy A. Woods、Olan Dolezal、Bin Ren、Thomas S. Peat、Sally-Ann Poulsen
DOI:10.1021/acs.jmedchem.7b00606
日期:2017.9.14
the classical zinc binding group found in most CA II inhibitors. Protein X-ray crystallography established that 3-unsubstituted 2,4-oxazolidinediones bound to CA II via an interaction of the acidic ring nitrogen with the CA II active site zinc, as well as two hydrogen bonds between the oxazolidinedione ring oxygen and the CA II protein backbone. Furthermore, 3-unsubstituted 2,4-oxazolidinediones appear