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Details for Patent: 7,122,693

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Details for Patent: 7,122,693

Title:Acetaldehyde acetal compounds, their synthesis, and uses thereof
Abstract: The acetaldehyde compounds, 2-thiobenzoylacetaldehyde diethylacetal, 2-benzoyloxyacetaldehyde bis(2-methoxyethyl)acetal, 2-hydroxyacetaldehyde bis( 2-methoxyethyl)acetal, 2-thiobenzoylacetaldehyde bis(2-methoxy-ethyl)acetal, and 2-thioacetaldehyde bis(2-methoxyethyl)acetal, are useful as intermediates in the synthesis of substituted 1,3-oxathiolanes and substituted 1,3-dioxolanes.
Inventor(s): Belleau, executrix of estate; Pierette (Montreal, CA), Dixit; Dilip M. (Roxboro, CA), Nguyen-Ba; Nghe (La Prairie, CA), Belleau, deceased; Bernard (Montreal, CA)
Assignee: Shire BioChem Inc. (Laval, CA)
Filing Date:Jul 09, 2004
Application Number:10/887,182
Claims:1. The compound 2-thiobenzoylacetaldehyde diethylacetal.

2. A compound selected from the group consisting of: 2-benzoyloxyacetaldehyde bis(2-methoxyethyl)acetal; 2-hydroxyacetaldehyde bis(2-methoxyethyl)acetal; 2-thiobenzoylacetaldehyde bis(2-methoxy-ethyl)acetal; and 2-thioacetaldehyde bis(2-methoxyethyl)acetal.

3. A method for preparing 2-thiobenzoylacetaldehyde diethylacetal comprising treating bromoacetaldehyde diethyl acetal in boiling DMF with an excess of potassium thiobenzoate to obtain 2-thiobenzoylacetaldehyde diethylacetal.

4. A method comprising hydrolyzing the benzoyl group of 2-thiobenzoylacetaldehyde diethylacetal with sodium hydroxide in an aqueous organic solvent to the mercaptoacetal HSCH.sub.2CH(OC.sub.2H.sub.5).sub.2.

5. A compound according to claim 2, wherein said compound is 2-benzoyloxyacetaldehyde bis(2-methoxyethyl)acetal.

6. A compound according to claim 2, wherein said compound is 2-hydroxyacetaldehyde bis(2-methoxyethyl)acetal.

7. A compound according to claim 2, wherein said compound is 2-thiobenzoylacetaldehyde bis(2-methoxy-ethyl)acetal.

8. A compound according to claim 2, wherein said compound is 2-thioacetaldehyde bis(2-methoxyethyl)acetal.
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