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(12) Patent: | (11) CA 1039749 |
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(21) Application Number: | 229050 |
(54) English Title: | PROCESS FOR THE PREPARATION OF .alpha.-DIOL-.gamma.-DIOXO COMPOUNDS |
(54) French Title: | COMPOSES .alpha.-DIOL .gamma.-DIOXOIQUES |
Status: | Expired |
(52) Canadian Patent Classification (CPC): |
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(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : | |
(74) Agent: | |
(74) Associate agent: | |
(45) Issued: | 1978-10-03 |
(22) Filed Date: | |
Availability of licence: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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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.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 1039749 was not found.
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Title | Date |
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Forecasted Issue Date | 1978-10-03 |
(45) Issued | 1978-10-03 |
Expired | 1995-10-03 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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SNAMPROGETTI S.P.A. |
Past Owners on Record |
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None |