Hydrogen Bromide → HCID 22406785, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 7-hydroxy-6-methoxy-[1-(2-chlorophenyl)-3,3-dimethylcyclobutyl]-1,2,3,4-tetrahydroisoquinoline (3.7 g), methanol (50 ml) and 37-40% aqueous formaldehyde solution was cooled to 5° C. Sodium cyanoborohydride (1.4 g) was added and the mixture stirred for 1.5 hours. The solvents were removed by evaporation and the residue partitioned between water and dichloromethane. The organic layer was washed with aqueous ammonia solution and then brine, dried and the solvent removed by evaporation to give a gum which was dissolved in propan-2-ol. Addition of 48% aqueous hydrobromic acid gave 7-hydroxy-6-methoxy-2-methyl-1-[1-(2-chlorophenyl)-3,3-dimethylcyclobutyl]-1,2,3,4-tetrahydroisoquinoline hydrobromide, m.p. 202°-204° C. (dec).

Provenance & Evidence