Propylamine → HCID 20570829, compound

Participants

Reaction Steps

15.0 g. 1-[2-hydroxy-3-(4-phenoxymethylpiperidino)-propoxy]-4-methyl-2,3-dinitrobenzene (see preparation of the starting material for Example (4a) are heated under reflux in 12 ml. n-propylamine for 3.5 hours. After cooling, there are isolated 8.8 g. (59% of theory) crystalline 1-[2-hydroxy-3-(4-phenoxymethylpiperidino)-propoxy]-4-methyl-2-propylamino-3-nitrobenzene; m.p. 91°-93° C. This compound is hydrogenated in the presence of platinum oxide to give the desired 3-amino-1-[2-hydroxy-3-(4-phenoxymethylpiperidino)-propoxy]-4-methyl-2-propylaminobenzene.

Provenance & Evidence