Potassium Carbonate → HCID 86653794, compound

HRID 85132

Reaction equation

HRID 85132 reaction equation
[Br:1][C:2]1[CH:9]=[CH:8][C:7]([OH:10])=[CH:6][C:3]=1[CH:4]=[O:5].Cl[CH2:12][C@H:13]1[CH2:17][O:16][C:15]([CH3:19])([CH3:18])[O:14]1.C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.O>[Br:1][C:2]1[CH:9]=[CH:8][C:7]([O:10][CH2:12][C@H:13]2[CH2:17][O:16][C:15]([CH3:19])([CH3:18])[O:14]2)=[CH:6][C:3]=1[CH:4]=[O:5]

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 3871792-Bromo-5-hydroxybenzaldehydeHCID 2734443(R)-(+)-4-(Chloromethyl)-2,2-dimethyl-1,3-dioxolane

Product 1

HCID 86653794HCID 86653794, compoundYield 56%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
150 °C

Procedure

To a solution of 2-bromo-5-hydroxybenzaldehyde (62; 5 g, 0.025 mol) in DMF (100 ml) was added (R)-4-(chloromethyl)-2,2-dimethyl-1,3-dioxolane (63; 4.87 g, 0.032 mol) and K2CO3 (7.0 g, 0.05 mol). The resulting reaction mixture was stirred at 150° C. for 10 h, cooled to room temperature, diluted with water, and then extracted with EtOAc. The combined organic layers were dried (Na2SO4) and concentrated under reduced pressure. The resulting residue was purified by chromatography (petroleum ether/EtOAc=10:1 to afford the desired product, namely (S)-2-bromo-5-((2,2-dimethyl-1,3-dioxolan-4-yl)methoxy)benzaldehyde 64 (4.1 g, 56%).

Workup

  1. customThe resulting reaction mixture
  2. temperaturecooled to room temperature
  3. extractionextracted with EtOAc
  4. dry with materialThe combined organic layers were dried (Na2SO4)
  5. concentrationconcentrated under reduced pressure
  6. customThe resulting residue was purified by chromatography (petroleum ether/EtOAc=10:1

Sources & evidence

ORD record
ord-7cb895ee291041ef807b9d856cc72837
Source dataset
uspto-grants-2014_09
Patent number
US08846947B2

Linked notes

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