Chloroacetaldehyde → HCID 20441341, compound

Participants

Reaction Steps

55.6 ml chloroacetaldehyde (45% in water) are added dropwise to 87.2 g 3-(2-aminoethyl)-1-phenylindole, 400 ml 2N hydrochloric acid and 2.5 liters water at 50°. The mixture is heated for 1 hour at 95°, treated once more with 55.6 ml chloroacetaldehyde and heated for a further 45 minutes. The mixture is then cooled to 0°, made alkaline with conc. ammonia and shaken with ether. The organic phase is dried over sodium sulphate, and purified with animal charcoal, and concentrated. The residue 1-chloromethyl-1,2,3,4-tetrahydro-9-phenylpyrido[3,4-b]indole is converted into the hydrochloride, m.p. 174°-180° (from ethanol/ether).

Provenance & Evidence