Methane → HCID 21402615, compound

HRID 973263Notes

Reaction equation

HRID 973263 reaction equation
C([O:3][C:4]([C:6]1[O:7][C:8]2[CH:16]=[CH:15][C:14]([CH2:17][CH:18]=[CH2:19])=[C:13]([OH:20])[C:9]=2[C:10](=[O:12])[CH:11]=1)=[O:5])C.C>C(=O)(O)[O-].[Na+]>[CH2:17]([C:14]1[CH:15]=[CH:16][C:8]2[O:7][C:6]([C:4]([OH:5])=[O:3])=[CH:11][C:10](=[O:12])[C:9]=2[C:13]=1[OH:20])[CH:18]=[CH2:19]

Participants

4

Reactant 2

HCID 297MethaneHCID 2801527HCID 2801527, compound

Product 1

HCID 21402615HCID 21402615, compound

Reagents, catalysts & solvents 1

HCID 516892Sodium BicarbonateSolvent

Conditions

Temperature
100 °C

Procedure

A suspension of 2.0 parts of 6-allyl-5-hydroxy-4-oxo-4H-1-benzopyran-2-carboxylic acid ethyl ester in aqueous sodium bicarbonate solution was stirred and heated at 100°C till solution was complete. The solution was treated with charcoal, filtered and acidified with dilute hydrochloric acid to give a yellow precipitate. This solid was crystallised from ethanol to give 0.84 parts of 6-allyl-5-hydroxy-4-oxo-4H-1-benzopyran-2-carboxylic acid as yellow needles, melting point 222°-224°C.

Workup

  1. filtrationfiltered
  2. customto give a yellow precipitate
  3. customThis solid was crystallised from ethanol

Sources & evidence

ORD record
ord-59ab3402b68f44c9866474aede8b9a4d
Source dataset
uspto-grants-1977_10
Patent number
US04055654

Reaction notes

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