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Triphenylphosphine → 4-(1-t-Butoxycarbonylpiperidin-4-yloxy)-3-chloronitrobenzene

HRID 1268181
Notes
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Reaction equation

HRID 1268181 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([OH:14])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[Cl:15][C:16]1[CH:21]=[C:20]([N+:22]([O-:24])=[O:23])[CH:19]=[CH:18][C:17]=1O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O>ClCCl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([O:14][C:17]2[CH:18]=[CH:19][C:20]([N+:22]([O-:24])=[O:23])=[CH:21][C:16]=2[Cl:15])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 12074NitrofunginHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 643502Tert-butyl 4-hydroxypiperidine-1-carboxylate

Product 1

HCID 221810984-(1-t-Butoxycarbonylpiperidin-4-yloxy)-3-chloronitrobenzeneYield 80.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 1-t-butoxycarbonyl-4-hydroxypiperidine (3.32 g), 2-chloro-4-nitrophenol (2.36 g) and triphenylphosphine (5.11 g) in dichloromethane (60 ml) was added dropwise diethyl azodicarboxylate (3.1 ml) in an ice bath and the mixture was stirred at room temperature for 18 hours. The reaction mixture was concentrated in vacuo. The residue was purified by chromatography on a silica gel column using hexane/ethyl acetate=5/2 as an eluant to give the desired compound (3.90 g, yield 76%) as a pale yellow solid.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customThe residue was purified by chromatography on a silica gel column

Sources & evidence

ORD record
ord-e3401e9203ea4e4eb0ac65bd82de9025
Source dataset
uspto-grants-2003_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06555556B1

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes