Cesium carbonate → Tert-butyl 4-(2-([1,2,4]triazolo[4,3-a]pyridin-3-yl)quinolin-8-ylamino)piperidine-1-carboxylate

HRID 2035554Notes

Reaction equation

HRID 2035554 reaction equation
FC(F)(F)S(O[C:7]1[CH:8]=[CH:9][CH:10]=[C:11]2[C:16]=1[N:15]=[C:14]([C:17]1[N:21]3[CH:22]=[CH:23][CH:24]=[CH:25][C:20]3=[N:19][N:18]=1)[CH:13]=[CH:12]2)(=O)=O.[NH2:28][CH:29]1[CH2:34][CH2:33][N:32]([C:35]([O:37][C:38]([CH3:41])([CH3:40])[CH3:39])=[O:36])[CH2:31][CH2:30]1.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(=O)([O-])[O-].[Cs+].[Cs+]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[N:19]1[N:18]=[C:17]([C:14]2[CH:13]=[CH:12][C:11]3[C:16](=[C:7]([NH:28][CH:29]4[CH2:30][CH2:31][N:32]([C:35]([O:37][C:38]([CH3:41])([CH3:40])[CH3:39])=[O:36])[CH2:33][CH2:34]4)[CH:8]=[CH:9][CH:10]=3)[N:15]=2)[N:21]2[CH:22]=[CH:23][CH:24]=[CH:25][C:20]=12

Participants

6

Reactant 4

HCID 10796Cesium carbonateHCID 634876Binap, (A+-)-HCID 12682914-Amino-1-Boc-piperidineHCID 866543542-([1,2,4]Triazolo[4,3-a]pyridin-3-yl)quinolin-8-yl trifluoromethanesulfonate

Product 1

HCID 67232134Tert-butyl 4-(2-([1,2,4]triazolo[4,3-a]pyridin-3-yl)quinolin-8-ylamino)piperidine-1-carboxylateYield 96.3%

Reagents, catalysts & solvents 1

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalyst

Conditions

Temperature
100 °C

Procedure

2-([1,2,4]triazolo[4,3-a]pyridin-3-yl)quinolin-8-yl trifluoromethanesulfonate (0.100 g, 0.25 mmol), tert-butyl 4-aminopiperidine-1-carboxylate (0.102 g, 0.51 mmol), Pd2 dba3 (0.023 g, 0.025 mmol), BINAP (0.032 g, 0.05 mmol) and cesium carbonate (0.124 g, 0.38 mmol) were combined in a capped vial and stirred at 100° C. for 16 hours. The cooled mixture was filtered through GF paper and the filtrate partitioned between saturated NaHCO3 and EtOAc. The aqueous phase was extracted with EtOAc and the combined organic phases were washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography (CH2Cl2 followed by 1% MeOH/CH2Cl2) to provide 0.107 g (95%) of desired product as an orange foam.

Workup

  1. filtrationThe cooled mixture was filtered through GF paper
  2. customthe filtrate partitioned between saturated NaHCO3 and EtOAc
  3. extractionThe aqueous phase was extracted with EtOAc
  4. washthe combined organic phases were washed with brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was purified by flash column chromatography (CH2Cl2 followed by 1% MeOH/CH2Cl2)

Sources & evidence

ORD record
ord-2699ebc1d3e4428c805c1f8985b50352
Source dataset
uspto-grants-2013_11
Patent number
US08575145B2

Reaction notes

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