Etudes sur les matières végétales volatiles CLXXIX. Synthèses des cis ‐ et trans ‐[méthyl‐2‐propène‐1]‐yl‐2‐méthyl‐4‐tétrahydropyrannes

Reduction of the hydroperoxides prepared by oxygenation of (+)‐β‐citronellyl acetate affords the acetate of (+)‐2,3‐epoxy‐dihydrocitronellol and the acetates of the (+)‐dehydrocitronellols (the (+)‐2,6‐dimethyl‐octa‐1,3‐diene‐8‐ols predominating in the latter), as well as those of the (+)‐2,6‐dimethyl‐oct‐3‐ene‐2,8‐diols (where the trans ‐ isomer predominates).