反应详情

A mixture of of N-[2-(3,4-dimethoxyphenyl)ethyl]-5-methoxy-α-methyl-2-(phenylethynyl)benzenepropanamine (0.3 g, 0.68 mmole), the free base of the product of Example 1e, and 37% aqueous formaldehyde (0.5 mL) were combined in absolute methanol (5 mL). With stirring, sodium borohydride (0.05 g, 1.3 mmole) was added, and the resulting reaction mixture stirred overnight. The mixture was concentrated in vacuo, the resulting residue dissolved in 5 mL of EtOAc, 5 mL of 1N sodium hydroxide was added and the resulting layers separated. The aqueous layer was extracted with EtOAc and washed with water, brine and dried over anhydrous sodium sulfate. After filtering, the filtrate was concentrated in vacuo to give 0.3 g of the title product as a golden oil. The title product is the antihypertensive pharmaceutical prepared in Example 32 of European Pat. No. 146,271.

1. customthe resulting reaction mixture
2. stirringstirred overnight
3. concentrationThe mixture was concentrated in vacuo
4. dissolutionthe resulting residue dissolved in 5 mL of EtOAc
5. addition5 mL of 1N sodium hydroxide was added
6. customthe resulting layers separated
7. extractionThe aqueous layer was extracted with EtOAc
8. washwashed with water, brine
9. dry with materialdried over anhydrous sodium sulfate
10. filtrationAfter filtering
11. concentrationthe filtrate was concentrated in vacuo