New general synthesis of α-alkoxyketones via α′-alkylation, α-alkylation and α,α′-dialkylation of α-alkoxyketimines
作者:Filip Colpaert、Sven Mangelinckx、Maria Teresa Rocchetti、Norbert De Kimpe
DOI:10.1039/c0ob00662a
日期:——
important intermediates in organic synthesis and flavor compounds in food chemistry, were synthesized by deprotonation of N-(1-alkoxy-2-propylidene)isopropylamine, prepared by condensation of the corresponding α-alkoxyacetone with isopropylamine, and subsequent reaction of the corresponding 1-azaallylic anions with alkyl halides to afford α′-alkylated, α-alkylated and α,α′-dialkylated ketimines. Hydrolysis
A simple catalytic system consisting of PdCl2 and N,N-dimethylacetamide enabled clean and selective synthesis of ketones from internal olefins using molecular oxygen. Various functionalized internal olefins were directly and regioselectively oxidized; C atoms of CC bonds far from substituted moieties were preferably oxidized.