Water → HCID 19814263, compound

Participants

Reaction Steps

The solution of 18.7 g of 8-benzyl-3-n-heptyl-4-hydroxy-4-methyl-2-oxo-1-oxa-3,8-diazaspiro[4,5]decane in 40 ml of benzyl alcohol is heated at 160° C. for 5 hours while the water formed in the reaction is azeotropically distilled off. Thereafter, the mixture is evaporated under reduced pressure. After taking up the residue in chloroform the solution is dried over anhydrous magnesium sulfate, filtered off and evaporated under reduced pressure. The crude product obtained is recrystallized from n-hexane under clarifying by activated carbon to obtain the title compound in 81% yield, m.p.: 47°-48° C.

Provenance & Evidence