Methylamine → (R)-1-(4-Nitro-phenyl)-pyrrolidine-2-carboxylic acid cyclopropylamide

HRID 1441378Notes

Reaction equation

HRID 1441378 reaction equation
[N+:1]([C:4]1[CH:9]=[CH:8][C:7]([N:10]2[CH2:14][CH2:13][CH2:12][C@@H:11]2[C:15]([OH:17])=O)=[CH:6][CH:5]=1)([O-:3])=[O:2].CN(C(ON1N=NC2[CH:29]=[CH:30][CH:31]=[N:32]C1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C.CN>C(Cl)Cl>[CH:31]1([NH:32][C:15]([C@H:11]2[CH2:12][CH2:13][CH2:14][N:10]2[C:7]2[CH:6]=[CH:5][C:4]([N+:1]([O-:3])=[O:2])=[CH:9][CH:8]=2)=[O:17])[CH2:29][CH2:30]1

Participants

6

Reactant 4

HCID 6329MethylamineHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 262019311-(4-Nitrophenyl)-D-proline

Product 1

HCID 68685984(R)-1-(4-Nitro-phenyl)-pyrrolidine-2-carboxylic acid cyclopropylamide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To (R)-1-(4-nitro-phenyl)-pyrrolidine-2-carboxylic acid (Method 55; 1.8 g, 7.6 mmol) in DCM (50 ml) was added HATU (3.2 g, 8.4 mmol) and DIPEA (2.0 ml, 11.4 mmol). The reaction was stirred for 10 minutes before the addition of methylamine (0.84 g, 15 mmol); the reaction was stirred for 1 hour and then quenched with water (50 ml). The reaction was extracted with DCM (3×100 ml), dried and solvent removed in vacuo to yield a yellow gum. Purification was achieved via column chromatography eluting with 20% EtOAc/isohexane, 60% EtOAc/isohexane and finally 100% EtOAc. The title compound was obtained as a yellow solid (1.4 g, 74%). NMR (299.954 MHz, CDCl3) δ 8.13 (d, 2H), 6.55 (d, 2H), 6.06 (s, 1H), 4.14 (t, 1H), 3.70 (t, 1H), 3.38 (q, 1H), 2.75-2.66 (m, 1H), 2.36-2.29 (m, 2H), 2.17-1.95 (m, 2H), 0.82-0.73 (m, 2H), 0.46-0.35 (m, 2H); m/z 276.

Workup

  1. customquenched with water (50 ml)
  2. extractionThe reaction was extracted with DCM (3×100 ml)
  3. customdried
  4. customsolvent removed in vacuo
  5. customto yield a yellow gum
  6. customPurification
  7. washeluting with 20% EtOAc/isohexane, 60% EtOAc/isohexane and finally 100% EtOAc

Sources & evidence

ORD record
ord-97e50753b4884039872aaad87fd64243
Source dataset
uspto-grants-2010_02
Patent number
US07655652B2

Reaction notes

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