Iron-Catalyzed Oxidation of Tertiary Amines: Synthesis of β-1,3-Dicarbonyl Aldehydes by Three-Component C–C Couplings
作者:Weiping Liu、Jinhua Liu、Daisuke Ogawa、Yasushi Nishihara、Xingwei Guo、Zhiping Li
DOI:10.1021/ol202749x
日期:2011.12.2
beta-1,3-Dicarbonyl aldehydes were synthesized by iron-catalyzed oxidative reactions between 1,3-dicarbonyl compounds and two molecules of tertiary amines in the presence of tert-butyl hydroperoxide (TBHP). alpha,beta-Unsaturated aldehydes generated by tertiary amine oxidation In situ act as key intermediates under mild reaction conditions.
A Modular and Diastereoselective 5 + 1 Cyclization Approach to N-(Hetero)Aryl Piperidines
作者:Matthew A. Larsen、Elisabeth T. Hennessy、Madeleine C. Deem、Yu-hong Lam、Josep Saurí、Aaron C. Sather
DOI:10.1021/jacs.9b13114
日期:2020.1.15
A new general de novo synthesis of pharmaceutically important N-(hetero)aryl piperidines is reported. This protocol uses a robustly diastereoselective reductive amination/aza-Michael reaction se-quence to achieve rapid construction of complex polysubstituted ringsystems starting from widely available heterocyclic amine nu-cleophiles and carbonyl electrophiles. Notably, the diastereoselec-tivity of