Methane → HCID 21402603, compound

HRID 973266Notes

Reaction equation

HRID 973266 reaction equation
[CH2:1]([C:4]1[CH:5]=[C:6]([CH2:18][CH:19]=[CH2:20])[C:7]2[O:12][C:11]([C:13]([OH:15])=[O:14])=[CH:10][C:9](=[O:16])[C:8]=2[CH:17]=1)[CH:2]=[CH2:3].C>C(O)C>[CH2:1]([C:4]1[CH:5]=[C:6]([CH2:18][CH2:19][CH3:20])[C:7]2[O:12][C:11]([C:13]([OH:15])=[O:14])=[CH:10][C:9](=[O:16])[C:8]=2[CH:17]=1)[CH2:2][CH3:3]

Participants

4

Reactant 2

HCID 297MethaneHCID 21546401HCID 21546401, compound

Product 1

HCID 21402603HCID 21402603, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A solution of 6.2 parts of 6,8-dially-4-oxo-4H-1-benzopyran-2-carboxylic acid in 100 parts of ethanol was hydrogenated at room temperature for 45 minutes at a pressure of 45 p.s.i. in the presence of 5% palladised charcoal. The solution was filtered and evaporated to afford 6.1 parts of 6,8-di-n-propyl-4-oxo-4H-1-benzopyran-2-carboxylic acid, melting pont 183°-184° C after recrystallization from a mixture of ethyl acetate and petroleum ether (b.p. 60°-80° C).

Workup

  1. filtrationThe solution was filtered
  2. customevaporated

Sources & evidence

ORD record
ord-7ad560b8004d4483af84b3c55e973f54
Source dataset
uspto-grants-1977_10
Patent number
US04055654

Reaction notes

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