Azane;hydrate → HCID 19068023, compound

Participants

Reaction Steps

1.65 Grams of 5,7-diallyl-1-(ethoxy-carbonylmethyl)-3,4-dihydro-6-hydroxy-2(1H)-quinolinone obtained in Example 57 was dissolved in 50 ml of methanol, then 20 ml of 25% ammonia water thereto, the reaction mixture was stirred for 24 hours. Then the reaction mixture was concentrated under reduced pressure. The concentrate was extracted with chloroform, washed with water, dried, then concentrated again under reduced pressure. Thus obtained crude crystals were subjected to purification by passing it through a silica gel column and by using methylene chloridemethanol (50:1) as the eluent, there was obtained 1.2 g (80%) of 1-(carbamoylmethyl)-5,7-diallyl-3,4-dihydro-6-hydroxy-2(1H)-quinolinone.

Provenance & Evidence