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.
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%.
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.