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Dimethylformamide → HCID 86686878, compound

HRID 533110
Notes
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Reaction equation

HRID 533110 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]#[C:15][C:16]2[CH:21]=[C:20]([Br:22])[CH:19]=[CH:18][C:17]=2[OH:23])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].CN(C)C=O>[Cu](I)I.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.C(N(CC)CC)C>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][CH:11]([C:14]2[O:23][C:17]3[CH:18]=[CH:19][C:20]([Br:22])=[CH:21][C:16]=3[CH:15]=2)[CH2:12][CH2:13]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 2

HCID 6228DimethylformamideHCID 866868774-(5-Bromo-2-hydroxy-phenylethynyl)-piperidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 86686878HCID 86686878, compound

Reagents, catalysts & solvents 3

HCID 83717Copper iodideCatalystHCID 178418476HCID 178418476, compoundCatalyst
HCID 8471
Triethylamine
Solvent

Conditions

Temperature
55 °C

Procedure

A mixture of 4-(5-bromo-2-hydroxy-phenylethynyl)-piperidine-1-carboxylic acid tert-butyl ester (70 mg), copper iodide (9 mg), N,N-dimethylformamide (1 mL), triethylamine (100 μL), and Pd(PPh3)2Cl2 (7 mg) is heated under an argon atmosphere to 55° C. for 0.5 h. The reaction mixture is diluted with ice water after cooling to room temperature and extracted with ethyl acetate. The combined extracts are dried over MgSO4 and concentrated in vacuo. The residue is chromatographed on silica gel (cyclohexane/ethyl acetate 80:20→50:50) to give the title compound. LC (method 2): tR=1.49 min; Mass spectrum (ESI+): m/z=380, 382 [M+H]+.

Workup

  1. temperatureafter cooling to room temperature
  2. extractionextracted with ethyl acetate
  3. dry with materialThe combined extracts are dried over MgSO4
  4. concentrationconcentrated in vacuo
  5. customThe residue is chromatographed on silica gel (cyclohexane/ethyl acetate 80:20→50:50)

Sources & evidence

ORD record
ord-06141d448c0446f8be625e6d0f70c464
Source dataset
uspto-grants-2014_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08853239B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes