Formaldehyde → HCID 22660561, compound

Participants

Reaction Steps

(1H-Indol-2-yl)-(4-methyl-piperazin-1-yl)-methanone (Example 4, 0.231 g) in acetic acid (1.5 mL) at ambient temperature was treated with paraformaldehyde (0.4 g) and pyrrolidine (0.16 mL). The reaction mixture was heated at 60° for 6 h then poured into water and the solution adjusted to basic pH by addition of 1 M sodium hydroxide. The mixture was extracted with dichloromethane. The organic extracts were combined, dried over sodium sulfate, filtered, and concentrated to give crude product. Purification via silica gel chromatography, eluting with 1-8% methanol/dichloromethane afforded the title compound (0.1 g).

Provenance & Evidence