Enantioselective Organocatalytic Multicomponent Synthesis of 2,6-Diazabicyclo[2.2.2]octanones
作者:Maria del Mar Sanchez Duque、Olivier Baslé、Yves Génisson、Jean-Christophe Plaquevent、Xavier Bugaut、Thierry Constantieux、Jean Rodriguez
DOI:10.1002/anie.201306656
日期:2013.12.23
compounds: The title reaction of β‐ketoamides, acrolein, and aminophenols, catalyzed by a bifunctional thiourea‐tertiary amine organocatalyst, enables the preparation of an enantioenriched diazabicyclo[2.2.2]octanone (2,6‐DABCO) scaffold. The chemoselective reaction sequence installs five new bonds and three stereocenters, two of which are contiguous tetrasubstituted centers, with excellent yields and high
A general evaluation of silylated nucleophiles to intercept transient [small alpha]-oxoketenes generated by microwave-assisted Wolff rearrangement of 2-diazo-1,3-dicarbonyl compounds is presented. Original scaffolds and synthetic intermediates are accessed in a rapid,...