反应详情

To the solution of 7-Methoxy-6-methyl-indan-4-carbaldehyde (8.0 gm 0.042 mole) and Acetyl acetone (4.63 gm, 0.046 mole) in Toluene (80 ml), Piperidine (0.5 ml) and Acetic acid (0.5 ml) were added. The reaction mixture was refluxed over 3A° molecular sieve using dean stark apparatus for 24 hours. Toluene was distilled under vacuum to give a crude product, which was purified by column chromatography using 5% Ethyl acetate in Hexane. The fractions were distilled to give 3.0 gm of condensed product It was dissolved in Methanol (60 ml) and hydrogenation was carried out over 5% w/w Palladium on Barium sulphate (350 mg) at 40-50 psi. using Hydrogen gas at 25-30° C. The reaction mixture was filtered through hyflow bed and distilled under vacuum to give a 2.9 gm of desired compound as a viscous oil.

1. temperatureThe reaction mixture was refluxed over 3A° molecular sieve
2. customfor 24 hours
3. distillationToluene was distilled under vacuum
4. customto give a crude product, which
5. customwas purified by column chromatography
6. distillationThe fractions were distilled
7. customto give
8. custom3.0 gm of condensed product It
9. customat 25-30° C
10. filtrationThe reaction mixture was filtered through hyflow bed
11. distillationdistilled under vacuum