Experimental w-Acetyllongifolene (Ib).-To 25 ml. of acetic anhydride and 31 ml. of boron trifluoride etherate, cooled and stirred in an ice bath, was added 10.2 g. of longifolene'aduring5 min. The mixture slowly darkened and became almost homogeneous after an additional 5 min. at 0". It was then added slowly to a mixture of ice and concentrated aqueous potassium hydroxide. This alkaline mixture was stirred as it warmed to room ...
