Hydroboration-oxidation of ricinoleic acid derivatives
摘要:
The regioselectivily in the hydroboration-oxidation of ricinoleic acid derivatives only slightly depends oil the configuration of the optically active center: the fraction of the resulting 1,3-diol is larger by 6-10% than that of the 1.4-isomer. The new asymmetric center has preterentially S configuration, as follows from the formation of the corresponding stereoisomeric 1.3-dioxane from the 1,3-diol and of 2,5-dialkyltetrahydrofuran from the 1,4-diol.