Process for the preparation of .alpha.-diol-.gamma.-dioxo...

Details Process for the preparation of .alpha.-diol-.gamma.-dioxo... Process for the preparation of .alpha.-diol-.gamma.-dioxo...

C - Chemistry, Metallurgy

07

C

260/585.1

C07C 45/00 (2006.01) C07C 45/59 (2006.01) C07C 49/17 (2006.01)

Patent

CA 1039749

ABSTRACT OF THE DISCLOSURE: The invention relates to a process for the preparation of -diol- -dioxo compounds having the general formula: Image in which R1 and R4 which may be identical or different, each represent a lower alkyl radical and R2 and R3 each represent a hydrogen atom, comprising reacting a compound having the general formula: Image wherein R1, R2, R3, R4 have the above meanings with an oxidizing mixture consisting of osmium tetroxide and an alkaline or alkaline earth metal chlorate, in the presence of water. The ?-diol-?-dioxo compounds according to the present invention are useful synthesis intermediates, for instance in the preparation via cyclization of furane derivatives, some of which may be employed as flavorants or perfumes.

229050

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