Methane → HCID 21402603, compound

Participants

Reaction Steps

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).

Provenance & Evidence