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US 7,071,362 B2Granted
Process for producing alicyclic aldehydes
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsTomohiro Sugawara, Fumiya Zaima, Atsushi Okoshi, Kinji Kato, Masato Inari
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Abstract
In the production of an alicyclic aldehyde, a starting aromatic aldehyde is converted into an aromatic acetal for protecting the formyl group. The aromatic ring of the aromatic acetal is then hydrogenated to convert the aromatic acetal into an alicyclic acetal, which is then hydrolyzed to cleave the acetal protecting group to obtain the aimed alicyclic aldehyde.
Claims25
A process for producing an alicyclic aldehyde, comprising the steps of:
- (A) acetalizing an aromatic aldehyde with an alcohol into an aromatic acetal;
- (B) hydrogenating the aromatic acetal produced in the step A into an alicyclic acetal;
- and
- (C) hydrolyzing the alicyclic acetal produced in the step B into the alicyclic aldehyde;
- wherein the hydrogenation of the aromatic acetal in the step B is conducted in the presence of an acid.
2 more elements
A process for producing an alicyclic aldehyde, comprising the steps of:
- (A) acetalizing an aromatic aldehyde with an alcohol into an aromatic acetal;
- (B) hydrogenating the aromatic acetal produced in the step A into an alicyclic acetal;
- and
- (C) hydrolyzing the alicyclic acetal produced in the step B into the alicyclic aldehyde;
- wherein the hydrogenation of the aromatic acetal in the step B is conducted in the presence of an alkali.
2 more elements
Dependencies are inferred from the claim text.