The first organocatalytic general, efficient and highly enantioselective α‐hydroxyamination reactions of β‐ketoamides with nitrosobenzene are described using a thiourea/tertiary amine bifunctional catalyst. Significantly, the products were obtained in high enantiomeric purity using a low catalyst loading, and in the context of sustainable development, the full reaction mixture, including solvent, catalyst
Nikolaev,V.A. et al., Journal of Organic Chemistry USSR (English Translation), 1978, vol. 14, p. 1069 - 1079
作者:Nikolaev,V.A. et al.
DOI:——
日期:——
Transition-Metal-Free α-Arylation of β-Keto Amides via an Interrupted Insertion Reaction of Arynes
作者:Kishor Mohanan、Yoann Coquerel、Jean Rodriguez
DOI:10.1021/ol302180v
日期:2012.9.7
Direct alpha-arylation reactions of secondary beta-keto amides with arynes, generated by fluoride-induced elimination of ortho-silyl aryltriflates, are described. The transformation proceeds via an interrupted insertion reaction of arynes and leads to densely functionalized aromatic compounds exhibiting a chiral 'all carbon' quaternary center under transition-metal-free conditions. An organocatalytic asymmetric version of the reaction also proved possible, affording the proof of concept that arynes can be involved in enantioselective transformations.
NIKOLAEV V. A.; FRENX YU.; KOROBITSINA I. K., ZH. ORGAN. XIMII, 1978, 14, HO 6, 1147-1160