Water → HCID 13336381, compound

Participants

Reaction Steps

A 1.6M solution of butyllithium in hexane (37 ml) is added, under a nitrogen atmosphere and at 0° C., to 1,4-dioxa-8-azaspiro[4,5]decane (7.5 ml) in anhydrous tetrahydrofuran (30 ml). After 30 minutes, a solution of ethyl 2-phenylquinazoline-4-carboxylate (8 g) in anhydrous tetrahydrofuran (30 ml) is added. After 2 hours at ambient temperature, water is added and the mixture is extracted with methylene chloride. The organic phase is washed with water, dried over magnesium sulphate and evaporated to dryness under reduced pressure. The residue is taken up in acetone (100 ml) and concentrated hydrochloric acid (20 ml) and the mixture is stirred for 5 hours at ambient temperature.

Provenance & Evidence