778-29-0 → gamma-Butenylcyclopentadiene

참여 물질

반응 조건

반응 단계

68.9 ml of a 2.0M solution of cyclopentadienyl sodium in tetrahydrofuran (THF) are added to a solution of 100 millimoles of the γ-butenyl 1-tosylate prepared in the preceding stage (a), in 200 ml of THF cooled to 0° C. The mixture is heated to ambient temperature (20° C.) and is stirred for 16 hours. 100 ml of an aqueous saline solution are added to the mixture and the product is extracted with ether (3′ 75 ml). The organic fractions are dried over magnesium sulphate for 2 hours, filtered and the solvents are removed at reduced pressure to give a dark brown oily crude product. The crude product is distilled at reduced pressure to give γ-butenylcyclopentadiene in the form of a colourless oil.

출처 및 근거