tert-Butyl 4-formylpiperidine-1-carboxylate → HCID 21906567, Verbindung
Reaktionsgleichung
[NH2:1][C:2]1[CH:17]=[CH:16][C:15]([C:18]([O:20][CH3:21])=[O:19])=[CH:14][C:3]=1[C:4]([NH:6][C:7]1[CH:12]=[CH:11][C:10]([Cl:13])=[CH:9][N:8]=1)=[O:5].C(OC([N:29]1[CH2:34][CH2:33][CH:32]([CH:35]=O)[CH2:31][CH2:30]1)=O)(C)(C)C.[B-][N+](C)(C)C>>[Cl:13][C:10]1[CH:11]=[CH:12][C:7]([NH:6][C:4](=[O:5])[C:3]2[CH:14]=[C:15]([C:18]([O:20][CH3:21])=[O:19])[CH:16]=[CH:17][C:2]=2[NH:1][CH2:35][CH:32]2[CH2:33][CH2:34][NH:29][CH2:30][CH2:31]2)=[N:8][CH:9]=1Komponenten
4
Versuchsvorschrift
Using a similar procedure to that described in Example 47-C&D, 2-amino-N-(5-chloropyridin-2-yl)-5-methoxycarbonylbenzamide (3.23 g, 10.6 mmol), 1-tert-butoxycarbonylpiperidine-4-carboxaldehyde (2.50 g, 11.7 mmol), and borane trimethylamine complex (2.31 g, 31.7 mmol) afforded, after purification by column chromatography (SiO2: 10 to 25% methanol:methylene chloride), 3.10 g (73%) of the title compound.