Dichloromethane → HCID 19352726, compound

Participants

Reaction Steps

A reactor was charged with 1.6 g (4 mmol) of the (-)-5-octyloxy-2-{4-(6-hydroxy-heptyl)-phenyl}-pyrimidine obtained in Example 9, 2 g of triethylamine and 30 g of dichloromethane, to which was dropwise added 0.6 g (6 mmol) of propionyl chloride at a temperature not exceeding 10° C. The mixture was reacted first at 0-10° C. for one hour and thereafter at 20-30° C. for 2 hours. After the reaction, the reaction mixture was poured into ice water, and the mixture thus obtained was separated into two phases. The organic layer was washed successively with 5% hydrochloric acid, water, 5% aqueous solution of sodium bicarbonate and saturated aqueous solution of sodium chloride, dried over magnesium sulfate, and concentrated under reduced pressure. Purification of the residue by silica gel column chromatography gave 1.6 g (yield 85%) of (+)-5-octyloxy-2-{4-(6-propionyloxy-1-trans-heptenyl)-phenyl}-pyrimidine, [α]D20 =+0.96 (c=1.1, CHCl3).

Provenance & Evidence