Water → HCID 21949906, compound

HRID 558296Notes

Reaction equation

HRID 558296 reaction equation
O.[CH2:2]([C:4]1[C:8]([O:9][C:10]2[CH:11]=[C:12]([CH:15]=[C:16]([S:18][CH3:19])[CH:17]=2)[C:13]#[N:14])=[C:7]([CH2:20][CH3:21])[N:6]([CH2:22][CH2:23][OH:24])[N:5]=1)[CH3:3].[OH:25]OS([O-])=O.[K+]>ClCCl>[CH2:2]([C:4]1[C:8]([O:9][C:10]2[CH:11]=[C:12]([CH:15]=[C:16]([S:18]([CH3:19])=[O:25])[CH:17]=2)[C:13]#[N:14])=[C:7]([CH2:20][CH3:21])[N:6]([CH2:22][CH2:23][OH:24])[N:5]=1)[CH3:3]

Participants

5

Reactant 3

HCID 962WaterHCID 21949931HCID 21949931, compoundHCID 23707502Potassium hydroxy sulfite2×

Product 1

HCID 21949906HCID 21949906, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Wet alumina was prepared by adding water (1 ml) to Brockman grade I alumina (5 g). To a stirred solution of the sulphide from Example 250 (134 mg, 0.40 mmol) in dichloromethane (2 ml) was added of wet alumina (400 mg) followed by Oxone® (123 mg, 0.4 mmol) and the mixture was heated at reflux. After 1 hour a second portion of oxone (123 mg, 0.40 mmol) was added and the mixture was heated for a further 2 hours. After cooling to room temperature the reaction mixture was filtered and the resulting solids were washed with dichloromethane (20 ml). The filtrate was concentrated and was purified by flash chromatography on silica gel eluting with dichloromethane:methanol (a gradient from 99:1 to 90:10, by volume) to provide the title compound (92 mg) as an oil.

Workup

  1. customWet alumina was prepared
  2. temperaturethe mixture was heated
  3. temperatureat reflux
  4. temperaturethe mixture was heated for a further 2 hours
  5. filtrationwas filtered
  6. washthe resulting solids were washed with dichloromethane (20 ml)
  7. concentrationThe filtrate was concentrated
  8. customwas purified by flash chromatography on silica gel eluting with dichloromethane

Sources & evidence

ORD record
ord-b441b72d581f455285c1d228eb9927fe
Source dataset
uspto-grants-2011_11
Patent number
US08063044B2

Reaction notes

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