Tetrahydrofuran → tert-butyl-N-[1-[[6-ethynyl-5-(2-methylimidazo[1,2-a]pyridin-3-yl)pyridin-2-yl]amino]-1-oxopropan-2-yl]-N-methylcarbamate

HRID 535405Notes

Reaction equation

HRID 535405 reaction equation
[C:1]([O:5][C:6](=[O:42])[N:7]([CH3:41])[CH:8]([CH3:40])[C:9]([NH:11][C:12]1[CH:17]=[CH:16][C:15]([C:18]2[N:22]3[CH:23]=[CH:24][CH:25]=[CH:26][C:21]3=[N:20][C:19]=2[CH3:27])=[C:14]([C:28]#[C:29][Si](C(C)C)(C(C)C)C(C)C)[N:13]=1)=[O:10])([CH3:4])([CH3:3])[CH3:2].C1COCC1.[F-].C([N+](CCCC)(CCCC)CCCC)CCC>C(Cl)Cl>[C:1]([O:5][C:6](=[O:42])[N:7]([CH:8]([CH3:40])[C:9]([NH:11][C:12]1[CH:17]=[CH:16][C:15]([C:18]2[N:22]3[CH:23]=[CH:24][CH:25]=[CH:26][C:21]3=[N:20][C:19]=2[CH3:27])=[C:14]([C:28]#[CH:29])[N:13]=1)=[O:10])[CH3:41])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 2724141Tetrabutylammonium FluorideHCID 86694388tert-butyl-N-methyl-N-[1-[[5-(2-methylimidazo[1,2-a]pyridin-3-yl)-6-[2-tri-(propan-2-yl)silylethynyl]pyridin-2-yl]-amino]-1-oxopropan-2-yl]carbamate

Product 1

HCID 86694391tert-butyl-N-[1-[[6-ethynyl-5-(2-methylimidazo[1,2-a]pyridin-3-yl)pyridin-2-yl]amino]-1-oxopropan-2-yl]-N-methylcarbamate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of tert-butyl-N-methyl-N-[1-[[5-(2-methylimidazo[1,2-a]pyridin-3-yl)-6-[2-tri-(propan-2-yl)silylethynyl]pyridin-2-yl]-amino]-1-oxopropan-2-yl]carbamate E1k (16.7 g, 28.3 mmol), THF (200 ml) and tetrabutylammonium fluoride (1 mol/l solution in THF, 34 ml, 34 mmol) is stirred at RT for 15 minutes. The mixture is diluted with DCM and extracted with a saturated aqueous solution of NaHCO3. The combined organic layers are dried over MgSO4 and concentrated in vacuo. The mixture is concentrated in vacuo and the product purified by NP chromatography. Yield: 10.6 g (86%). HPLC-MS: M+H=434; tR=1.20 min (*Method—1).

Workup

  1. extractionextracted with a saturated aqueous solution of NaHCO3
  2. dry with materialThe combined organic layers are dried over MgSO4
  3. concentrationconcentrated in vacuo
  4. concentrationThe mixture is concentrated in vacuo
  5. customthe product purified by NP chromatography

Sources & evidence

ORD record
ord-b3989f568f5048eca9ff8e5716a86402
Source dataset
uspto-grants-2014_10
Patent number
US08859541B2

Reaction notes

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