Syntheses of substituted pyridines and fluorinated compounds, which are often pharmaceutical targets, are important objectives in organic chemistry. Herein, we found that decarboxylative fluorination of lithium 2‐pyridylacetates occur under catalyst‐free conditions. The phenomenon can be applied to one‐pot transformation of substitutedmethyl 2‐pyridylacetate to 2‐(fluoroalkyl)pyridine by decarboxylative
Three-Component Synthesis of Pyridylacetic Acid Derivatives by Arylation/Decarboxylative Substitution of Meldrum’s Acids
作者:Tarn C. Johnson、Stephen P. Marsden
DOI:10.1021/acs.joc.2c01597
日期:2022.11.4
A convenient and simple three-component synthesis of substituted pyridylacetic acid derivatives is reported. The approach centers on the dual reactivity of Meldrum’s acid derivatives, initially as nucleophiles to perform substitution on activated pyridine-N-oxides, then as electrophiles with a range of nucleophiles to trigger ring-opening and decarboxylation.
Methyl 2-(nitrogen-heteroaryl)propanoates were synthesized by the palladium-catalyzed reaction of heteroary halides with (E)-1-methoxy-1 -trimethylsiloxypropene.