A mild preparation of α-halo-α,β-enones from cyclic enones
摘要:
A simple one pot procedure for the selective transformation of cyclic enones into cr-halo-a,P-enones is reported using dimethyldioxirane and metal halides / Amberlyst 15. The method appears particulary appealing for the preparation of labelled molecules for use with the CMIA techinique. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
Reaction of cyclic α,β-epoxy ketones with Ce(III) chloride under hydrous or anhydrous conditions yields the corresponding cyclic α-chloro-α,β-enones or cyclic α-chloro-β-hydroxy ketones, respectively.