Diisopropylethylamine → HCID 59170103, compound

HRID 1446309Notes

Reaction equation

HRID 1446309 reaction equation
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[O:13][N:12]=[CH:11][C:10]=1[C:14]([OH:16])=O.[C:17]1([CH:23]2[CH2:27][CH2:26][NH:25][CH2:24]2)[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.F[B-](F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2C=CC=CC=2N=N1.C(N(C(C)C)CC)(C)C>CN(C)C=O>[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[O:13][N:12]=[CH:11][C:10]=1[C:14]([N:25]1[CH2:26][CH2:27][CH:23]([C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[CH2:24]1)=[O:16]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 31467433-PhenylpyrrolidineHCID 228317025-(2-Methoxyphenyl)-1,2-oxazole-4-carboxylic acid

Product 1

HCID 59170103HCID 59170103, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

5-(2-methoxyphenyl)-isoxazole-4-carboxylic acid (50.6 mg, 0.231 mmol), 3-phenylpyrrolidine (40 mg, 0.271 mmol), O-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate (92.6 mg, 0.288 mmol) and diisopropylethylamine (49.7 mg, 0.384 mmol) were mixed in dimethylformamide (1.5 mL) and stirred at room temperature over night. Solvent was evaporated in vacuo (0.5-1.0 mL) and the residue was taken up in dichloromethane (1 mL), filtered and purified by normal-phase chromatography (20-50% EtOAc:petroleum ether). The combined fractions were partitioned between H2O/acetic acid (pH 4) and ethyl acetate. The organic fractions were washed with H2O/brine and concentrated in vacuo to afford the title compound. HRMS (ESI, pos. ion) m/z calcd for C21H20N2O3: 348.1474, found 348.1479.

Workup

  1. customSolvent was evaporated in vacuo (0.5-1.0 mL)
  2. filtrationfiltered
  3. custompurified by normal-phase chromatography (20-50% EtOAc:petroleum ether)
  4. customThe combined fractions were partitioned between H2O/acetic acid (pH 4) and ethyl acetate
  5. washThe organic fractions were washed with H2O/brine
  6. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-d28e8e3d205343678cddb0d078b66755
Source dataset
uspto-grants-2010_02
Patent number
US07666888B2

Reaction notes

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