Oxalyl chloride → 6-Methyl-2-(trifluoromethyl)-3-pyridinecarbonyl chloride

Participants

Reaction Steps

A solution of 0.45 g of 6-methyl-2-trifluoromethylpyridin-3-ylcarboxyi ic acid in 20 ml of dichloromethane is charged initially, 3 drops of dimethylformamid c are added and the mixture is subsequently treated with 1.6 ml of oxalyl chloride. After the intensive evolution of gas has ceased, the mixture is kept at a bath temperature of 40° C. for another 1.5 hours and then evaporated. The crude product (0.56 g) that remains as residue can be directly reacted further. 1H NMR (CDCl3, ppm): 8.20 (1H,d); 7.51 (1H,d); 2.65 (3H, s).

Provenance & Evidence