反应详情

Mixtures of 50 to 70 % by weight of thymol with 50 to 30 % by weight of d-neomenthol or d-menthol were used as starting material in accordance with the general conditions described above. In Table I below, column 1 gives the composition of the starting material, column 2 the balance yield of d,l-menthol in percent of the theoretical, whilst the other columns give the contents in the reaction product of d,l-neomenthol, d,l-isomenthol, menthone and other ketones, also hydrocarbons, the OH-number, the optical rotation and the thymol content, calculated from the UV-absorption.