Hydrochloric Acid → HCID 13669830, compound

HRID 543395Notes

Reaction equation

HRID 543395 reaction equation
[OH:1][C:2]1[CH:3]=[CH:4][C:5]2[C:6](=[O:17])[C:7]3[C:12]([O:13][C:14]=2[C:15]=1[CH3:16])=[CH:11][CH:10]=[CH:9][CH:8]=3.C(=O)([O-])[O-].[K+].[K+].Br[CH2:25][C:26]([O:28]CC)=[O:27].[OH-].[Na+].Cl>O.CN(C=O)C>[CH3:16][C:15]1[C:14]2[O:13][C:12]3[C:7](=[CH:8][CH:9]=[CH:10][CH:11]=3)[C:6](=[O:17])[C:5]=2[CH:4]=[CH:3][C:2]=1[O:1][CH2:25][C:26]([OH:28])=[O:27]

Participants

8

Reactant 5

HCID 313Hydrochloric AcidHCID 7748Ethyl bromoacetateHCID 11430Potassium CarbonateHCID 14798Sodium HydroxideHCID 12230593HCID 12230593, compound

Product 1

HCID 13669830HCID 13669830, compoundYield 79.6%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

A mixture of 1.0 g of 3-hydroxy-4-methyl-9-oxo-9H-xanthene, 1.5 g of potassium carbonate, 1.8 g of ethyl bromoacetate and 20 ml of DMF was agitated at 60°-70° C. for 2 hours. After cooling the mixture, 2 g of sodium hydroxide and 40 ml of water were added, and the resulting mixture was stirred at 90°-100° C. for 30 minutes. After cooling, the mixture was rendered acidic with hydrochloric acid and the solid crystal was recovered by filtration, washed with water and dried. Recrystallization from ethanol gave 1.0 g of 4-methyl-9-oxo-9H-xanthene-3-yloxyacetic acid. m.p. 244°-247° C. This compound gave a mass spectrum having a molecular ion peak at m/e 284.

Workup

  1. additionwere added
  2. stirringthe resulting mixture was stirred at 90°-100° C. for 30 minutes
  3. temperatureAfter cooling
  4. filtrationthe solid crystal was recovered by filtration
  5. washwashed with water
  6. customdried
  7. customRecrystallization from ethanol

Sources & evidence

ORD record
ord-eea1eb6c22174ea6a0debd529c0af201
Source dataset
uspto-grants-1987_04
Patent number
US04661607

Reaction notes

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