Hydrochloric Acid → 3-(2-Biphenyl-4-yl-ethylcarbamoyl)-pentanedioic acid tert-butyl ester ethyl ester

HRID 2214260Notes

Reaction equation

HRID 2214260 reaction equation
[CH2:1]([O:3][C:4](=[O:18])[CH2:5][CH:6]([C:15]([OH:17])=O)[CH2:7][C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9])[CH3:2].CCN(C(C)C)C(C)C.[C:28]1([C:37]2[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=2)[CH:33]=[CH:32][C:31]([CH2:34][CH2:35][NH2:36])=[CH:30][CH:29]=1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F.Cl>CN(C=O)C>[CH2:1]([O:3][C:4](=[O:18])[CH2:5][CH:6]([C:15](=[O:17])[NH:36][CH2:35][CH2:34][C:31]1[CH:32]=[CH:33][C:28]([C:37]2[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=2)=[CH:29][CH:30]=1)[CH2:7][C:8]([O:10][C:11]([CH3:12])([CH3:13])[CH3:14])=[O:9])[CH3:2]

Participants

7

Reactant 5

HCID 313Hydrochloric AcidHCID 282102-(4-Biphenyl)ethylamineHCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 877344153-Carboxy-pentanedioic acid tert-butyl ester ethyl ester

Product 1

HCID 692126363-(2-Biphenyl-4-yl-ethylcarbamoyl)-pentanedioic acid tert-butyl ester ethyl ester

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of the compound of example 70 (1.55 g, 5.96 mmol) in anhydrous DMF (5 mL) was treated successively with DIEA (5.2 mL), 4-biphenylethyl amine (2.40 g, 11.92 mmol) and TBTU (2.76 g, 8.34 mmol). The reaction mixture was stirred for 24 h at room temperature. The reaction mixture was treated with HCl (1M, excess) and the mixture was extracted several times with ethyl acetate. The recombined organic layer was washed with brine, dried over sodium sulfate, filtered and evaporated. The residue was flashed with 30% ethyl acetate in hexanes and the desired product was obtained as a white solid. 1H-NMR(CDCl3, 400 MH: 1.22(t, J=7.2, 3H); 1.42(s, 9H); 2.32–2.42(m, 2H); 2.60–2.75(m, 2H); 2.83(t, J=7.1 Hz, 2H); 3.02(m, 1H); 3.53(m, 2H); 4.11(m, 2H); 6.25(m, t, 5.1 Hz, 1H); 7.30(m, 3H); 7.43(m, 2H); 7.57(m, 4H).

Workup

  1. extractionthe mixture was extracted several times with ethyl acetate
  2. washThe recombined organic layer was washed with brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. customevaporated

Sources & evidence

ORD record
ord-f2bc931ba61a430cada21178d4360d9d
Source dataset
uspto-grants-2006_09
Patent number
US07105539B2

Reaction notes

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