Neohesperidin → Neohesperidin dihydrochalcone

Participants

Reaction Steps

18.9 g (0.030 mol) of neohesperidin are dissolved in 90 ml of 2-N sodium hydroxide and treated with 1.2 g of Raney-nickel. The mixture is hydrogenated under normal pressure for 15 hours. The hydrogen uptake corresponds to 30 mmol. The solution is filtered and adjusted to pH 6 with 36 ml of 5-N hydrochloric acid while cooling with ice and stirring. The resulting clear yellow solution is left in a refrigerator for 48 hours and then filtered under suction. The white residue is washed with cold water and dried overnight in a high vacuum. There are obtained 17.4 g (95% yield) of neohesperidin dihydrochalcone of melting point 150°C.

Provenance & Evidence