Water → HCID 70542795, compound

Participants

Reaction Steps

227 g (3.15 mols) of isobutyraldehyde is added dropwise, within 1.5 hours, to a solution of 324 g (3.0 mols) of 4-aminomethylpyridine in 300 ml of benzene, the addition being made in a manner ensuring that the temperature in the solution does not exceed 35° C. The water which has formed (about 39 g) is separated, and the benzene (with residual water) is distilled off under a slight water-jet vacuum. The residue is distilled in an oil-pump vacuum. After a small preliminary fraction of 5 g, there is obtained 445 g (2.75 mols) of isobutylidene-4-aminomethylpyridine as a slightly yellowish main fraction, corresponding to a yield of 91.5% of theory; b.p. 81.5°-82° C./133 Pa; nD20 =1.5105.

Provenance & Evidence