Trimethylsilyldiazomethane → 4-(2-Diazo-acetyl)-piperidine-1-carboxylic acid benzyl ester
Reaktionsgleichung
[CH2:1]([O:8][C:9]([N:11]1[CH2:16][CH2:15][CH:14]([C:17](Cl)=[O:18])[CH2:13][CH2:12]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C[Si]([CH:24]=[N+:25]=[N-:26])(C)C>ClCCl>[CH2:1]([O:8][C:9]([N:11]1[CH2:16][CH2:15][CH:14]([C:17](=[O:18])[CH:24]=[N+:25]=[N-:26])[CH2:13][CH2:12]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
4-Chlorocarbonyl-piperidine-1-carboxylic acid benzyl ester (43 g, 0.15 mol) in dichloromethane (300 mL) was treated with (trimethylsilyl)diazomethane (2.0 M in hexanes, 150 mL, 0.31 mol) over 15 min. The reaction mixture was stirred at ambient temperature for 18 hours and the mixture was concentrated to afford crude 4-(2-diazo-acetyl)-piperidine-1-carboxylic acid benzyl ester (44 g), which was used without further purification.