Sila-Riechstoffe und Riechstoff-Isostere, 13. Mitt.Grimmsche Hydridisostere im Bereich der Duftstoffklasse des Linalools
作者:U. Wannagat、V. Damrath、U. Harder
DOI:10.1007/bf00813801
日期:1994.11
Substitution of the (CH3)(3)CH=CH group by (CH3)(2)C=N in linalool as well as by the (CPT3)(2)CH-CH2 group in linalool and in sila-linalool does not lead to noticeable changes of their scent qualities. On the contrary, substitution of the OH group at the tertiary C atom by NH2 or CH3 - hydride isosteric to OH according to Grimm - affords fishy or etheric instead of the original flowery smells thus indicating a transition to different basic classes of odor. Similar results were obtained with the linalool-like scents of benzyldimethylcarbinol and phenylethyldimethylcarbinol. Therefore the theory of Amoore, after which only shape and size of molecules are ruling their odor qualities, must be called in question.
The acyloxy exchange reactions of acyloxysilane with carboxylic acids have been studied kinetically. The rate of reaction has been found to proceed faster with a stronger attacking acid and more basic leaving acyloxy group. The rate was markedly accelerated by the addition of base. The steric effect due to substituents on the silicon atom and hydrogen-deuterium kinetic isotopeeffects have been examined