Hydrogen Bromide → HCID 20360242, compound

Participants

Reaction Steps

70 g of 57% hydrobromic acid, 5.5 g of red phosphorus and 18 ml of water were added to 17 g of 1,4-dimethyl-2,3,4,5,6,7-hexahydro-1,6-methano-1H-4-benzazonin-7-ol, and the mixture was heated and refluxed for 3 hours. The reaction mixture liquid was cooled and filtered, and the filtrate was subjected to distillation under reduced pressure. The residue was made alkaline with sodium hydroxide and extracted with ether. The ether extract was dried and filtered, and ether was distilled from the extract. The residue was subjected to vacuum distillation to obtain 8 g of 1,4-dimethyl-2,3,4,5,6,7-hexahydro-1,6-methano-1H-4-benzazonine boiling at 160° to 170° C. (bath temperature) under 3 mmHg in the form of a colorless oily product. When the hydrochloride was recrystallized from isopropyl alcohol, the melting point of the recrystallized product was 225° to 230° C.

Provenance & Evidence