Ammonia → HCID 22406767, compound

Participants

Reaction Conditions

Reaction Steps

The product of Example 41 (4 g) was dissolved in water at 80° C. The solution was basified with aqueous ammonia solution and extracted with ethyl acetate. The extract gave a residue which was dissolved in acetic acid (40 ml). The solution was cooled to 0° C. and acetic anhydride (20 ml) and then a mixture of 70% nitric acid (1.4 ml), acetic acid (30 ml) and acetic anhydride (20 ml) were added. The mixture was kept at 5° C. for 40 minutes and was then added to aqueous sodium bicarbonate and left for 16 hours before being extracted with ethyl acetate. The extract gave a residue which was purified by flash chromatography to give a solid which was dissolved in ethyl acetate. Addition of ethereal oxalic acid solution gave a solid which was triturated with hot ethyl acetate to give 7-hydroxy-2-methyl-6-nitro-1-(1-phenylcyclobutyl)-1,2,3,4-tetrahydroisoquinoline oxalate, m.p. 172°-173° C. (dec).

Provenance & Evidence