反应详情

To m-phenoxybenzyl α-bromoisovalerate (5 g, 0.0138 mole) in 9 ml of HMPT, at 24°, is added p-chloroaniline (5.27 g, 0.0413 mole) and a catalytic amount of potassium iodide (60 mg). The reaction mixture is stirred at 70° for four days. The reaction is then poured into ice-water (30 ml) and 10 ml of 2 N sulfuric acid which is extracted with ether (3×30 ml). The combined ether extracts are washed with water (2×30 ml) and brine (10 ml), dried over calcium sulfate, filtered and evaporated. The crude product is purified by preparative TLC to yield the m-phenoxybenzyl ester of N-(p-chlorophenyl)valine.

1. extractionis extracted with ether (3×30 ml)
2. washThe combined ether extracts are washed with water (2×30 ml) and brine (10 ml)
3. dry with materialdried over calcium sulfate
4. filtrationfiltered
5. customevaporated
6. customThe crude product is purified by preparative TLC