Hydrochloric Acid → 2-tert-butyl-4-chloro-5-(2-hydroxy-1-(4-tert-butylphenyl)-1-ethyl)oxy-3(2H)-pyridazinone

HRID 1392860Notes

Reaction equation

HRID 1392860 reaction equation
[C:1]([N:5]1[C:10](=[O:11])[C:9]([Cl:12])=[C:8]([O:13][CH:14]([C:24]2[CH:29]=[CH:28][C:27]([C:30]([CH3:33])([CH3:32])[CH3:31])=[CH:26][CH:25]=2)[CH2:15][O:16][Si](C(C)(C)C)(C)C)[CH:7]=[N:6]1)([CH3:4])([CH3:3])[CH3:2].Cl>C(O)C.O>[C:1]([N:5]1[C:10](=[O:11])[C:9]([Cl:12])=[C:8]([O:13][CH:14]([C:24]2[CH:25]=[CH:26][C:27]([C:30]([CH3:33])([CH3:32])[CH3:31])=[CH:28][CH:29]=2)[CH2:15][OH:16])[CH:7]=[N:6]1)([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 671007092-tert-butyl-4-chloro-5-(2-tert-butyldimethylsilyloxy-1-(4-tert-butylphenyl)-1-ethyl)oxy-3(2H)-pyridazinone

Product 1

HCID 671003162-tert-butyl-4-chloro-5-(2-hydroxy-1-(4-tert-butylphenyl)-1-ethyl)oxy-3(2H)-pyridazinone

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 962WaterSolvent

Procedure

A 25 ml round bottom flask is charged 2-tert-butyl-4-chloro-5-(2-tert-butyldimethylsilyloxy-1-(4-tert-butylphenyl)-1-ethyl)oxy-3 (2H)-pyridazinone (0.5 g, 1.01 mmol) and to it is added 5 ml of 1% concd. HCl in ethanol. The solution is stirred for one hour after which it is poured in water and extracted with ethyl acetate. The ethyl acetate is removed using the rotary evaporator and subjected to flash chromatography using silica gel and ethyl acetate/hexanes mixture as the eluting medium.

Workup

  1. additionto it is added 5 ml of 1% concd
  2. extractionextracted with ethyl acetate
  3. customThe ethyl acetate is removed
  4. customthe rotary evaporator

Sources & evidence

ORD record
ord-f8e66e1248084ec0a76a6b1db05456d2
Source dataset
uspto-grants-2008_03
Patent number
US07344702B2

Reaction notes

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