반응 #93954

반응 방정식

tetrahydro-4H-pyran-4-one

2,5-dimethyl-p-anisaldehyde

→

yellow solid

수율 39.0%

Tetrahydro-3,5-bis[(4-methoxy-2,5-dimethylphenyl)methylene]-4H-pyran-4-one

수율 39.0%

용매

EtOH

HCl

반응 조건

후처리

1. 1
   온도heated
2. 2
   온도at reflux for 3 hours

실험 절차

A solution of 7.0 g (0.07 mole) of tetrahydro-4H-pyran-4-one and 25.2 g (0.15 mole) of 2,5-dimethyl-p-anisaldehyde in 75 ml of EtOH and 10 ml of concentrated HCl is stirred and heated at reflux for 3 hours. The resulting mixture is kept at room temperature for 24 hours, yielding 10.7 g (39%) of yellow solid, m.p. 182°-184°.

출처