1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 2-(6-chloro-1-methyl-1H-indazol-3-yl)-N-(2-phenylpropan-2-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide

HRID 246588Notes

Reaction equation

HRID 246588 reaction equation
[Cl:1][C:2]1[CH:10]=[C:9]2[C:5]([C:6]([C:12]3[N:13]=[C:14]4[C:20]([C:21](O)=[O:22])=[CH:19][NH:18][C:15]4=[N:16][CH:17]=3)=[N:7][N:8]2[CH3:11])=[CH:4][CH:3]=1.[C:24]1([C:30]([NH2:33])([CH3:32])[CH3:31])[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.CCN=C=NCCCN(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C>CN(C1C=CN=CC=1)C.CN(C=O)C>[Cl:1][C:2]1[CH:10]=[C:9]2[C:5]([C:6]([C:12]3[N:13]=[C:14]4[C:20]([C:21]([NH:33][C:30]([C:24]5[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=5)([CH3:32])[CH3:31])=[O:22])=[CH:19][NH:18][C:15]4=[N:16][CH:17]=3)=[N:7][N:8]2[CH3:11])=[CH:4][CH:3]=1

Participants

8

Reactant 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 68509CumylamineHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 712800962-(6-chloro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid

Product 1

HCID 712798052-(6-chloro-1-methyl-1H-indazol-3-yl)-N-(2-phenylpropan-2-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamideYield 18%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6228DimethylformamideSolvent

Procedure

A mixture of 2-(6-chloro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid (0.07 g, 0.3 mmol), 2-phenylpropan-2-amine (0.05 g, 0.37 mmol), EDCI (0.057 g, 0.3 mmol), DMAP (0.037 g, 0.3 mmol), HATU (0.114 g, 0.3 mmol) and DIPEA (0.163 g, 1.26 mmol) in 10 mL of DMF were stirred at room temperature overnight. The solvent was removed under reduced pressure at 70° C. The residue was triturated with 5 mL of water and then purified by preparative-HPLC (Gemini 5u C18 150×21.2 mm; inject volume: 3 mL/inj, flow rate: 20 mL/min; wavelength: 214 nm and 254 nm; the gradient conditions were: 60% acetonitrile/40% water (0.1% trifluoroacetic acid, v/v) initially, proceeding to 80% acetonitrile/20% water (0.1% trifluoroacetic acid, v/v) in a linear fashion over 9 min.) to give 2-(6-chloro-1-methyl-1H-indazol-3-yl)-N-(2-phenylpropan-2-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide (0.017 g, 18%) as a yellow solid. MS: (M+H)+=445; 1H NMR (300 MHz, DMSO): δ 12.89 (s, 1H), 9.13 (s, 1H), 8.46-8.43 (m, 2H), 8.38-8.37 (m, 1H), 8.00 (s, 1H), 7.51-7.49 (m, 2H), 7.34-7.16 (m, 4H), 4.20 (s, 3H), 1.86 (s, 6H).

Workup

  1. customThe solvent was removed under reduced pressure at 70° C
  2. customThe residue was triturated with 5 mL of water
  3. custompurified by preparative-HPLC (Gemini 5u C18 150×21.2 mm
  4. wait60% acetonitrile/40% water (0.1% trifluoroacetic acid, v/v) initially, proceeding to 80% acetonitrile/20% water (0.1% trifluoroacetic acid, v/v) in a linear fashion over 9 min.

Sources & evidence

ORD record
ord-2392f51f0015450abc2600fb6b938124
Source dataset
uspto-grants-2014_02
Patent number
US08658646B2

Reaction notes

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