N-(2-((1-(4-chlorobenzyl)piperidin-4-yl)methylamino)-2-oxoethyl)-2-amino-5-(trifluoromethyl)benzamide → 4-[[N-(2-amino-5-trifluoromethylbenzoyl)glycyl]aminomethyl]piperidine

HRID 279322Notes

Reaction equation

ClC1C=CC(C[N:7]2[CH2:12][CH2:11][CH:10]([CH2:13][NH:14][C:15](=[O:31])[CH2:16][NH:17][C:18](=[O:30])[C:19]3[CH:24]=[C:23]([C:25]([F:28])([F:27])[F:26])[CH:22]=[CH:21][C:20]=3[NH2:29])[CH2:9][CH2:8]2)=CC=1>C(O)=O.CO.[OH-].[OH-].[Pd+2]>[NH2:29][C:20]1[CH:21]=[CH:22][C:23]([C:25]([F:28])([F:26])[F:27])=[CH:24][C:19]=1[C:18]([NH:17][CH2:16][C:15]([NH:14][CH2:13][CH:10]1[CH2:9][CH2:8][NH:7][CH2:12][CH2:11]1)=[O:31])=[O:30]

Participants

Conditions

Temperature: 50 °C

Procedure

A suspension of 1-(4-chlorobenzyl)-4-[{(N-(2-amino-5-trifluoromethylbenzoyl)glycyl)amino}methyl]piperidine (447 mg, 0.93 mmol) and Pd(OH)2 (60 mg, 0.23 mmol) in 5% HCO2H/methanol (10 mL) was stirred at 50° C. for 14 h. The Pd catalyst was filtered off through Celite, and the filtrate was concentrated. To the residue was added 1N aqueous NaOH solution (15 mL) and the mixture was extracted with ethyl acetate (30 mL×3). The combined extracts were dried over anhydrous sodium sulfate, filtered, and concentrated. Column chromatography (SiO2, AcOEt/MeOH/Et3N=70/25/5) gave 4-[{(N-(2-amino-5-trifluoromethylbenzoyl)glycyl)amino}methyl]piperidine (284 mg, 86%): ESI/MS m/e 359.0 (M++H, C16H21F3N4O2).

Workup

filtrationThe Pd catalyst was filtered off through Celite
concentrationthe filtrate was concentrated
additionTo the residue was added 1N aqueous NaOH solution (15 mL)
extractionthe mixture was extracted with ethyl acetate (30 mL×3)
dry with materialThe combined extracts were dried over anhydrous sodium sulfate
filtrationfiltered
concentrationconcentrated

Sources & evidence

ORD record: ord-df42a15e4149489e81981255e6c06457
Source dataset: uspto-grants-2002_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06362177B1

Reaction notes

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