反应详情

31.84 g (75 mmol) ethyl 3-{[(3′-amino[1,1′-biphenyl]-3-yl)sulfonyl]amino}-3-phenyl-propanoate 10.1.2 were dissolved in 600 ml toluene and 8.62 g thiophosgene were added. The mixture was refluxed for 2 h, evaporated and the residue dissolved in 200 ml toluene. This solution was added dropwise to a solution of o-phenylendiamine (12.2 g 113 mmol) in 500 ml tetrahydrofurane/toluene (1/1) at 40° C. The mixture was stirred for 12 h at room temperature, concentrated and purified (flash chromatography: dichloromethane/acetic acid ethyl ester10+1) to yield 43 g (100%).

1. temperatureThe mixture was refluxed for 2 h
2. customevaporated
3. dissolutionthe residue dissolved in 200 ml toluene
4. concentrationconcentrated
5. custompurified (flash chromatography: dichloromethane/acetic acid ethyl ester10+1)
6. customto yield 43 g (100%)