反应详情

温度

150 °C

The tetralone from Step B (2.8 g, 9.4 mmole) was dissolved in 45 ml of dimethylformamide. To this solution was added lithium chloride (2.0 g, 47 mmole) and water (0.42 ml, 23 mmole). The reaction mixture was heated to 150° C. for 2.5 hrs and then cooled and partitioned between ether and water. The aqueous phase was separated and extracted three times with ether. The combined organic phases were washed once with water, dried (MgSO4), and concentrated (1.96 g, 87% yield). 1H NMR (CDCl3) δ: 8.13 (1H, dd, J=6,10 Hz), 7.31 (5H, m) 6.99 (2H, m), 3.80 (1H, m), 3.07 (2H, m), 2.43 (2H, m).

1. temperaturecooled
2. custompartitioned between ether and water
3. customThe aqueous phase was separated
4. extractionextracted three times with ether
5. washThe combined organic phases were washed once with water
6. dry with materialdried (MgSO4)
7. concentrationconcentrated (1.96 g, 87% yield)