Simple and convenient access to α,α,α-trisubstituted amides by double addition of Grignard reagents to acyl cyanohydrins
作者:Fatma Boukattaya、Andrii Stanovych、Paul Setzer、Souhir Abid、Houcine Ammar、Morwenna S. M. Pearson-Long、Philippe Bertus
DOI:10.1039/c2cc34841a
日期:——
The doubleaddition of Grignard (alkyl, aryl, alkenyl, alkynyl) reagents to acyl cyanohydrins was performed under unusually smooth conditions with a concomitant O-N acyl transfer, providing a very simple and general access to alpha,alpha,alpha-trisubstituted amides.
product was modulated by kinetic control, giving selectively hydroxyamides or cyclic carbamates. Allylzinc reagents were used to access highly functionalized tertiary carbinamine derivatives in high yields from cyanoesters and cyanocarbonates. While the monoaddition of organometallics on nitriles is generally observed, in this work the nucleophilic allylation occurs twice, due to an intermediate transfer
Heteromultifunctional Oxazolones as Versatile Linkers for Click Chemistry Reactions
作者:Mathilde Pantin、Julien Caillé、Fabien Boeda、Laurent Fontaine、Morwenna S. M. Pearson-Long、Philippe Bertus
DOI:10.1002/ejoc.201901350
日期:2019.11.30
functionalization of nitriles as the key step. The orthogonality of the functional groups was demonstrated by conducting sequential or simultaneous multi‐component reactions with amines, thiols, and azides, in respect to the concept of clickchemistry.