반응 #348953

반응 방정식

pentadienone

3,5-diphenyl-4-pyrone

1,3-diphenyl-2-propanone

ethyl formate

sodium methoxide

pyrone

ammonium acetate

disodium

1,5-dihydroxy-2,4-diphenyl-1,4-pentadien-3-one

→

3,5-diphenyl-4(1H)-pyridone

반응 조건

후처리

1. 1
   기타The compounds of this invention can be prepared by various synthetic routes

실험 절차

The compounds of this invention can be prepared by various synthetic routes. Benary and Bitter, Ber. 61, 1058 (1928) taught the synthesis of an intermediate disodium salt of 1,5-dihydroxy-2,4-diphenyl-1,4-pentadien-3-one by the condensation of 1,3-diphenyl-2-propanone with ethyl formate in the presence of sodium methoxide. The intermediate pentadienone is neutralized by strong acid and forms 3,5-diphenyl-4-pyrone. Reaction of the pyrone with ammonium acetate at an elevated temperature produces 3,5-diphenyl-4(1H)-pyridone.

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