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Ethanol → tert-butyl 4-(5-chloro-1H-indol-3-yl)piperidine-1-carboxylate

HRID 58660
Notes
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Reaction equation

HRID 58660 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[NH:7][CH:6]=[C:5]2[C:11]1[CH2:16][CH2:15][N:14]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:13][CH:12]=1.C(O)C>[Pt](=O)=O.C(O)(=O)C>[Cl:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[NH:7][CH:6]=[C:5]2[CH:11]1[CH2:16][CH2:15][N:14]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:13][CH2:12]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 702EthanolHCID 12072032tert-butyl 4-(5-chloro-1H-indol-3-yl)-5,6-dihydropyridine-1(2H)-carboxylate

Product 1

HCID 12072033tert-butyl 4-(5-chloro-1H-indol-3-yl)piperidine-1-carboxylateYield 98%

Reagents, catalysts & solvents 2

HCID 345198Adams' catalystCatalystHCID 176Acetic AcidSolvent

Procedure

Platinum(IV) oxide (0.107 g) was added to the suspension of tert-butyl 4-(5-chloro-1H-indol-3-yl)-5,6-dihydropyridine-1(2H)-carboxylate (1.05 g; 3.15 mmol) in the mixture of ethanol (20 mL) and acetic acid (10 mL). After degassing, the mixture was subjected to hydrogenation for 20 hours and was filtered through celite. The filtrate was concentrated under reduced pressure to give 1.03 g (98%) of tert-butyl 4-(5-chloro-1H-indol-3-yl)piperidine-1-carboxylate as a solid.

Workup

  1. customAfter degassing
  2. filtrationwas filtered through celite
  3. concentrationThe filtrate was concentrated under reduced pressure

Sources & evidence

ORD record
ord-f301d4f5e62a4d538f4d4cf01fe4292f
Source dataset
uspto-grants-2016_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09434722B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes