Methanol → HCID 53740698, compound

Participants

Reaction Steps

In 50 ml of tetrahydrofuran was dissolved 5 g of the 16-benzyloxy-2,6,10,14-tetramethyl-2,6,10,14-hexadecatetraenoic acid obtained as described in the previous (a) section. This solution was added dropwise to the above-prepared lithium solution over a period of 30 min. The mixture was stirred for 30 min., and 1,3-butadiene was introduced into the mixture until the color of the mixture (blue) faded. To the resulting yellow colored solution was added methanol until the yellow faded. Subsequently, this was left standing to reach room temperature. The solid product thus obtained was collected on a filter, and then dissolved in water. The aqueous solution was made weakly-acidic by addition of 1 N hydrochloric acid under ice-cooling, and then extracted with hexane. The extract was washed successively with water and a saturated aqueous sodium chloride solution, and then dried over magnesium sulfate. The dried extract was concentrated, and the thus-obtained concentrate was purified over a silica gel column to give 3.3 g of 16-hydroxy-2,6,10,14-tetramethyl-2,6,10,14-hexadecatetraenoic acid.

Provenance & Evidence