Atom-Economic Catalytic Direct Substitution of N,O-Acetals with Simple Ketones
作者:Bahria Touati、Abderrahman El Bouakher、Mohamed Salah Azizi、Catherine Taillier、Raja Ben Othman、Malika Trabelsi-Ayadi、Sylvain Antoniotti、Elisabet Duñach、Vincent Dalla
DOI:10.1002/ejoc.201700530
日期:2017.8.17
protocol for the direct amidoalkylation of simple enolizable ketones with use of Lewis superacid Sn(NTf2)4 as a catalyst is described. Couplings of a large set of both carbonyl and N,O-acetalic substrates (mostly the simplest OH-hemiaminals) proceed with very low catalyst loadings (≤ 1 mol-%) and provide the corresponding amidoalkylated ketones in high yields (up to 99 %).