Cesium carbonate → 2-Chloro-5-(2,2-dimethylpropoxy)pyridine

Participants

Reaction Steps

5.2 g (40.0 mmol) of 6-chloropyridin-3-ol, 11.9 g (60.0 mmol) of 1-iodo-2,2-dimethylpropane, 19.6 g (60.0 mmol) of cesium carbonate and 120 ml of diethylene glycol dimethyl ether are divided into five portions of equal size and reacted portion-wise in a single-mode microwave oven (CEM Explorer) at 160° C. for 4 h. The five reaction mixtures obtained are then combined, the solid is filtered off and washed with diethylene glycol dimethyl ether and filtrate and wash solutions are combined. Most of the solvent is removed, and 300 ml of water are added to the concentrated (about 50 ml) solution. The mixture is stirred for 30 min, and the solid obtained is filtered off, washed once with water and dried under high vacuum.

Provenance & Evidence