Diisopropylethylamine → HCID 46941027, compound

HRID 2114361Notes

Reaction equation

HRID 2114361 reaction equation
[CH3:1][C:2]1[C:15]([O:16][CH3:17])=[CH:14][C:5]2[N:6]([CH2:10][C:11]([OH:13])=O)[C:7](=[O:9])[O:8][C:4]=2[CH:3]=1.CN([P+](ON1N=NC2C=CC=CC1=2)(N(C)C)N(C)C)C.F[P-](F)(F)(F)(F)F.C(N(C(C)C)CC)(C)C.[C:54]1([C:69]2[CH:74]=[CH:73][CH:72]=[CH:71][CH:70]=2)[CH:59]=[CH:58][C:57]([CH:60]([NH:67][CH3:68])[CH2:61][N:62]2[CH2:66][CH2:65][CH2:64][CH2:63]2)=[CH:56][CH:55]=1>C(Cl)Cl>[C:54]1([C:69]2[CH:70]=[CH:71][CH:72]=[CH:73][CH:74]=2)[CH:59]=[CH:58][C:57]([CH:60]([N:67]([CH3:68])[C:11](=[O:13])[CH2:10][N:6]2[C:5]3[CH:14]=[C:15]([O:16][CH3:17])[C:2]([CH3:1])=[CH:3][C:4]=3[O:8][C:7]2=[O:9])[CH2:61][N:62]2[CH2:66][CH2:65][CH2:64][CH2:63]2)=[CH:56][CH:55]=1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 27567161-([1,1'-Biphenyl]-4-yl)-N-methyl-2-(pyrrolidin-1-yl)ethan-1-amineHCID 57457148[6-Methyl-5-(methyloxy)-2-oxo-1,3-benzoxazol-3(2H)-yl]acetic acid

Product 1

HCID 46941027HCID 46941027, compoundYield 74%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

[6-Methyl-5-(methyloxy)-2-oxo-1,3-benzoxazol-3(2H)-yl]acetic acid (59 mg, 0.25 mmol) and BOP reagent (133 mg, 0.30 mmol) were dissolved in CH2Cl2 (1 mL), and diisopropylethylamine (32 mg, 0.25 mmol) was added to it. The resulting mixture was stirred at room temperature for 5 min, then 1-(4-biphenylyl)-N-methyl-2-(1-pyrrolidinyl)ethanamine (70 mg, 0.25 mmol) was added. Stirring was continued for 16 h and then the mixture was concentrated. The residue was dissolved in CH3OH, and purified by preparative HPLC (YMC CombiPrep ODS-A, 50×50 mm, 50 mL/min, A: acetonitrile B: water with NH4OH at pH=10, A: 20% to 70% during 12 min, UV detection at 214 nm) to give 92 mg (74%) of the title compound as a white solid. MS (ES) m/e 500 [M+H]+.

Workup

  1. stirringStirring
  2. waitwas continued for 16 h
  3. concentrationthe mixture was concentrated
  4. dissolutionThe residue was dissolved in CH3OH
  5. custompurified by preparative HPLC (YMC CombiPrep ODS-A, 50×50 mm, 50 mL/min
  6. waitA: acetonitrile B: water with NH4OH at pH=10, A: 20% to 70% during 12 min

Sources & evidence

ORD record
ord-8830be8c140146d1b8eaef87701e67b9
Source dataset
uspto-grants-2008_10
Patent number
US07432258B2

Reaction notes

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