Sodium Chloride → (R)-tert-butyl 5-(1-(1-(tert-butoxycarbonyl)piperidin-3-yl)-1H-1,2,3-triazol-4-yl)-3-(pyridin-4-yl)-1H-indazole-1-carboxylate

HRID 1465693Notes

Reaction equation

HRID 1465693 reaction equation
[C:1]([C:3]1[CH:4]=[C:5]2[C:9](=[CH:10][CH:11]=1)[N:8]([C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[N:7]=[C:6]2[C:19]1[CH:24]=[CH:23][N:22]=[CH:21][CH:20]=1)#[CH:2].[N:25]([C@@H:28]1[CH2:33][CH2:32][CH2:31][N:30]([C:34]([O:36][C:37]([CH3:40])([CH3:39])[CH3:38])=[O:35])[CH2:29]1)=[N+:26]=[N-:27].[Na+].[Cl-]>CC(O)(C)C.O>[C:37]([O:36][C:34]([N:30]1[CH2:31][CH2:32][CH2:33][C@@H:28]([N:25]2[CH:2]=[C:1]([C:3]3[CH:4]=[C:5]4[C:9](=[CH:10][CH:11]=3)[N:8]([C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[N:7]=[C:6]4[C:19]3[CH:20]=[CH:21][N:22]=[CH:23][CH:24]=3)[N:27]=[N:26]2)[CH2:29]1)=[O:35])([CH3:40])([CH3:38])[CH3:39]

Participants

5

Reactant 3

HCID 5234Sodium ChlorideHCID 86695573HCID 86695573, compoundHCID 86695574tert-butyl 5-ethynyl-3-(pyridin-4-yl)-1H-indazole-1-carboxylate

Product 1

HCID 86695575(R)-tert-butyl 5-(1-(1-(tert-butoxycarbonyl)piperidin-3-yl)-1H-1,2,3-triazol-4-yl)-3-(pyridin-4-yl)-1H-indazole-1-carboxylateYield 123.7%

Reagents, catalysts & solvents 1

HCID 714019492-Methylpropan-2-ol--water (1/1)Solvent

Procedure

Tert-butyl 5-ethynyl-3-(pyridin-4-yl)-1H-indazole-1-carboxylate (0.385 g, 1.2 mmol) and (R)-tert-butyl 3-azidopiperidine-1-carboxylate (0.273 g, 1.2 mmol) were suspended in t-BuOH:H2O (1:1, 15 mL:15 mL) and then CuSO4.5H2O (0.060 g, 0.24 mmol) and Na-Ascorbic acid (0.096 g, 0.48 mmol) were added sequentially. Reaction mixture was stirred vigorously at room temperature overnight. After the completion of reaction, added sat. NaCl (30 mL), extracted with EtOAc (3×50 mL), evaporated the organic solvent to give (R)-tert-butyl 5-(1-(1-(tert-butoxycarbonyl)piperidin-3-yl)-1H-1,2,3-triazol-4-yl)-3-(pyridin-4-yl)-1H-indazole-1-carboxylate (0.81 g) which was used for next step without purification.

Workup

  1. customReaction mixture
  2. customAfter the completion of reaction
  3. extractionextracted with EtOAc (3×50 mL)
  4. customevaporated the organic solvent

Sources & evidence

ORD record
ord-bab0027d93624c349e4d56bb495b80c1
Source dataset
uspto-grants-2015_04
Patent number
US08999966B2

Reaction notes

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