反应详情

To a stirred solution of 1-benzhydryl-3-(2,4′-dichlorobenzhydryloxy)azetidine (8) (38 mmol) in dichloromethane (400 mL) was added 1-chloroethylchloroformate (94 mmol) dropwise at 0° C. and the reaction mixture stirred at room temperature overnight. The reaction mixture was concentrated in vacuo, then dissolved in methanol (400 mL) and stirred at room temperature for 2 hours. The reaction mixture was reduced in vacuo and diluted with isohexane (20 mL), diisopropyl ether (200 mL) and methanol (30 mL). Upon stirring, a precipitate formed. Filtration afforded the desired product as a white solid (10.1 g, 77%).

1. concentrationThe reaction mixture was concentrated in vacuo
2. dissolutiondissolved in methanol (400 mL)
3. stirringstirred at room temperature for 2 hours
4. additiondiluted with isohexane (20 mL), diisopropyl ether (200 mL) and methanol (30 mL)
5. stirringUpon stirring
6. customa precipitate formed
7. filtrationFiltration