THE HALOGEN REARRANGEMENT OF 1β-BROMO-AND 1β-CHLORO-5β-CHOLESTAN-2-ONE TO THE α′-POSITION

Autor: Satoh, J Yasuo, Horiuchi, C Akira, Hagitani, Akira
Zdroj: Chemistry Letters; October 1972, Vol. 1 Issue: 10 p995-998, 4p
Abstrakt: A new phenomenon of an α-haloketone having a halogen on its secondary carbon atom in which the halogen rearranges to the α′-position occupied by a secondary carbon atom was found in the reaction of 1β-bromo-and 1β-chloro-5β-cholestan-2-one with the following reagents: i) hydrogen bromide / acetic acid, ii) hydrogen chloride / acetic acid, iii) acetic acid, iv) acetic acid / dioxane, v) boron trifluoride etherate / dioxane, vi) perchloric acid-acetic anhydride / benzene-carbon tetrachloride, vii) potassium acetate / acetic acid.
Databáze: Supplemental Index