Triphenylphosphine → HCID 54394346, compound

HRID 1858073Notes

Reaction equation

HRID 1858073 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH2:11][CH2:10][CH:9]1[CH2:14][CH2:15][OH:16])=[O:7])([CH3:4])([CH3:3])[CH3:2].[Cl:17][C:18]1[CH:27]=[C:26]2[C:21]([C:22](O)=[C:23]([C:29]3[CH:34]=[C:33]([CH3:35])[CH:32]=[C:31]([CH3:36])[CH:30]=3)[C:24](=[O:28])[NH:25]2)=[CH:20][C:19]=1[N+:38]([O-:40])=[O:39].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O>>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH2:11][CH2:10][CH:9]1[CH2:14][CH2:15][O:16][C:22]1[C:21]2[C:26](=[CH:27][C:18]([Cl:17])=[C:19]([N+:38]([O-:40])=[O:39])[CH:20]=2)[NH:25][C:24](=[O:28])[C:23]=1[C:29]1[CH:30]=[C:31]([CH3:36])[CH:32]=[C:33]([CH3:35])[CH:34]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 4

HCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 5103438Tert-butyl 2-(2-hydroxyethyl)piperidine-1-carboxylateHCID 547112387-chloro-3-(3,5-dimethylphenyl)-4-hydroxy-6-nitro-1H-quinolin-2-one

Product 1

HCID 54394346HCID 54394346, compoundYield 74.5%

Procedure

To a solution of 2-(2-hydroxyethyl)-piperidine-1-carboxylic acid tert-butyl ester (0.864 g in 38 mL dry tetrahydrofuran) was added 1.56 g of 7-chloro-3-(3,5-dimethylphenyl)-4-hydroxy-6-nitro- 1H-quinolin-2-one followed by 1.19 g of triphenylphosphine and the mixture stirred at room temperature. To this was added 0.72 mL of diethyl azodicarboxylate (DEAD) and stirring was continued for 64 hours. At this time the solvents were removed in vacuo and the residue purified by flash chromatography on silica gel (hexane:ethyl acetate, 6:4) to give the title compound (1.56 g).

Workup

  1. stirringstirring
  2. customAt this time the solvents were removed in vacuo
  3. customthe residue purified by flash chromatography on silica gel (hexane:ethyl acetate, 6:4)

Sources & evidence

ORD record
ord-e2108b39771e41d4a5f32cd21f5a2382
Source dataset
uspto-grants-2000_11
Patent number
US06150352

Reaction notes

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