反应详情

Under the conditions of example 16 H, a solution of 20 g of 2-iodo-3-methoxypyridine-6-aldehyde in 100 ml of dimethylformamide is reacted with 33.5 ml of acrylic acid methyl ester in the presence of 1.73 g of palladium acetate, 26.1 g of potassium carbonate and 23.8 g of tetrabutylammonium bromide, worked up, and the crude product is chromatographed on silica gel with hexane/0-50% ethyl acetate. 11.66 g of 3-(6-formyl-3-methoxy-2-pyridyl)-(2E)-2-propenoic acid methyl ester of melting point 132°-134° C. is obtained.

1. customthe crude product is chromatographed on silica gel with hexane/0-50% ethyl acetate