Cesium carbonate → 4-[6-(7-Cyclopentyl-6-dimethylcarbamoyl-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl]-3-oxo-piperazine-1-carboxylic acid tert-butyl ester

HRID 1962199Notes

Reaction equation

HRID 1962199 reaction equation
[CH3:1][N:2]([CH3:20])[C:3]([C:5]1[N:14]([CH:15]2[CH2:19][CH2:18][CH2:17][CH2:16]2)[C:8]2[N:9]=[C:10](Cl)[N:11]=[CH:12][C:7]=2[CH:6]=1)=[O:4].[C:21]([O:25][C:26]([N:28]1[CH2:33][CH2:32][N:31]([C:34]2[CH:35]=[N:36][C:37]([NH2:40])=[CH:38][CH:39]=2)[C:30](=[O:41])[CH2:29]1)=[O:27])([CH3:24])([CH3:23])[CH3:22].C(=O)([O-])[O-].[Cs+].[Cs+]>O1C=COC=C1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1>[C:21]([O:25][C:26]([N:28]1[CH2:33][CH2:32][N:31]([C:34]2[CH:35]=[N:36][C:37]([NH:40][C:10]3[N:11]=[CH:12][C:7]4[CH:6]=[C:5]([C:3](=[O:4])[N:2]([CH3:20])[CH3:1])[N:14]([CH:15]5[CH2:19][CH2:18][CH2:17][CH2:16]5)[C:8]=4[N:9]=3)=[CH:38][CH:39]=2)[C:30](=[O:41])[CH2:29]1)=[O:27])([CH3:24])([CH3:22])[CH3:23]

Participants

7

Reactant 3

HCID 10796Cesium carbonateHCID 583154322-Chloro-7-cyclopentyl-N,N-dimethyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamideHCID 59290959Tert-butyl 4-(6-aminopyridin-3-yl)-3-oxopiperazine-1-carboxylate

Product 1

HCID 672413274-[6-(7-Cyclopentyl-6-dimethylcarbamoyl-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl]-3-oxo-piperazine-1-carboxylic acid tert-butyl esterYield 92.5%

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalyst2×HCID 634876Binap, (A+-)-Catalyst2×HCID 789681,4-DioxinSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 2-Chloro-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide (225 mg, 0.77 mmol), 4-(6-aminopyridin-3-yl)-3-oxopiperazine-1-carboxylic acid tert-butyl ester (204 mg, 0.69 mmol), BINAP (24 mg, 0.038 mmol), palladium(II) acetate (6 mg, 0.027 mmol) and cesium carbonate (340 mg, 1.05 mmol) in dioxin (4 mL) is flushed with nitrogen and heated to 100° C. overnight. Additional palladium(II) acetate (6 mg, 0.027 mmol) and BINAP (24 mg, 0.038) are added and heating is continued at 110° C. for 2 h at which point LCMS and TLC analysis indicates completion of the reaction. The solvent is removed in vacuo and the residue is stirred in water with sonication in an ultrasonic bath. The suspension is filtered and the filter cake is washed with heptane. Drying in vacuo provides 4-[6-(7-Cyclopentyl-6-dimethylcarbamoyl-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl]-3-oxo-piperazine-1-carboxylic acid tert-butyl ester as a tan solid (350 mg, 83%) MS (ESI) m/z=549 [M+H]+.

Workup

  1. customis flushed with nitrogen
  2. temperatureheating
  3. customcompletion of the reaction
  4. customThe solvent is removed in vacuo
  5. filtrationThe suspension is filtered
  6. washthe filter cake is washed with heptane
  7. customDrying in vacuo

Sources & evidence

ORD record
ord-79856a15fe834f6e92dccc3c2a09ddc7
Source dataset
uspto-grants-2013_04
Patent number
US08415355B2

Reaction notes

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