Sodium Hydroxide → HCID 86679701, compound

HRID 2367706Notes

Reaction equation

HRID 2367706 reaction equation
[OH-:1].[Na+].[N:3]1[CH:8]=[CH:7][CH:6]=[C:5]([C:9]2[CH:10]=[C:11]3[C:15](=[CH:16][CH:17]=2)[N:14]([CH:18]2[CH2:23][CH2:22][CH2:21][CH2:20][O:19]2)[N:13]=[C:12]3[CH:24]=[O:25])[CH:4]=1>O.O1CCOCC1.[N+]([O-])([O-])=O.[Ag+]>[N:3]1[CH:8]=[CH:7][CH:6]=[C:5]([C:9]2[CH:10]=[C:11]3[C:15](=[CH:16][CH:17]=2)[N:14]([CH:18]2[CH2:23][CH2:22][CH2:21][CH2:20][O:19]2)[N:13]=[C:12]3[C:24]([OH:1])=[O:25])[CH:4]=1

Participants

6

Reactant 2

HCID 14798Sodium HydroxideHCID 58135541HCID 58135541, compound

Product 1

HCID 86679701HCID 86679701, compoundYield 71.5%

Reagents, catalysts & solvents 3

HCID 24470Silver NitrateCatalystHCID 962WaterSolvent2×HCID 312751,4-DioxaneSolvent

Procedure

To a solution of silver nitrate (0.55 g, 3.25 mmol) in water (10 mL) was added a solution of sodium hydroxide (0.26 g, 6.50 mmol) in water (5 mL) to give a brown precipitate. 5-(pyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carbaldehyde (CXXXII) (0.40 g, 1.30 mmol) dissolved in 1,4-dioxane (3 mL) was added to the reaction which was stirred at room temperature for 2 h. The reaction was then extracted with diethyl ether. The aqueous layer was separated and carefully brought to pH=3 with 10% aqueous HCl. The aqueous layer was then extracted five times with iPrOH/chloroform (1/9). The combined organic layers were then dried (MgSO4) and concentrated to afford 5-(pyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxylic acid (CXXXIII) (0.30 g, 0.93 mmol, 70% yield) as a white solid. 1H NMR (DMSO-d6) δ ppm 13.28 (br, 1H), 8.93 (s, 1H), 8.60 (d, J=4.1 Hz, 1H), 8.32 (d, J=0.83 Hz, 1H), 8.14-8.12 (m, 1H), 8.00 (d, J=8.8 Hz, 1H), 7.86 (dd, J=8.8, 1.7 Hz, 1H), 7.52 (dd, J=7.8, 4.7 Hz, 1H), 6.04 (dd, J=9.3, 2.3 Hz, 1H), 3.92-3.90 (m, 1H), 3.83-3.78 (m, 1H), 2.44-2.37 (m, 1H), 2.08-2.02 (m, 2H), 1.79-1.76 (m, 1H), 1.63-1.61 (m, 2H).

Workup

  1. customto give a brown precipitate
  2. additionwas added to the reaction which
  3. extractionThe reaction was then extracted with diethyl ether
  4. customThe aqueous layer was separated
  5. extractionThe aqueous layer was then extracted five times with iPrOH/chloroform (1/9)
  6. dry with materialThe combined organic layers were then dried (MgSO4)
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-6d18146ac647469abde5fd0ce0d91d07
Source dataset
uspto-grants-2014_04
Patent number
US08697887B2

Reaction notes

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