反応 #48551

反応方程式

1-BOC-piperidine-4-carboxylic acid

4-chloroaniline

1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride

triethylamine

→

desired compound

tert-Butyl 4-{[(4-chlorophenyl)amino]carbonyl}piperidine-1-carboxylate

溶媒

acetonitrile

反応条件

後処理

1. 1
   濃縮concentrated under reduced pressure
2. 2
   workup.DISSOLUTIONThe residue was dissolved in ethyl acetate
3. 3
   その他partitioned with 2N hydrochloric acid
4. 4
   ろ過The resulting precipitate was filtered off
5. 5
   workup.DISSOLUTIONre-dissolved in dichloromethane
6. 6
   乾燥the solution was dried over MgSO4
7. 7
   その他evaporated under reduced pressure
8. 8
   その他The residue was triturated with ether

実験手順

1-BOC-piperidine-4-carboxylic acid (100 g, 437 mmol), 4-chloroaniline (61.2 g, 480 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (100 g, 524 mmol) and triethylamine (182.6 mL, 1.31 mol) were dissolved in cold (10° C.) acetonitrile (1.75 L). The reaction mixture was stirred for 54 hours at room temperature and then concentrated under reduced pressure. The residue was dissolved in ethyl acetate and then partitioned with 2N hydrochloric acid. The resulting precipitate was filtered off, re-dissolved in dichloromethane, the solution was dried over MgSO4 and evaporated under reduced pressure. The residue was triturated with ether to afford the desired compound as a white solid.

出典