Claims
- 1. A process for the preparation of an alkylidene diester from a carboxylic acid anhydride, which comprises reacting said carboxylic acid anhydride with hydrogen in the presence of a cobalt carbonyl, said reacting being carried out at a temperature below 100.degree. C., whereby decomposition of said cobalt carbonyl is minimized and said alkylidene diester is produced with minimum formation of aldehydes and like by-products, and recovering the thus-produced alkylidene diester from the resulting substantially aldehyde-free reaction mixture.
- 2. A process as defined in claim 1, wherein the cobalt carbonyl is dicobalt octacarbonyl.
- 3. A process as defined in claim 1, wherein the cobalt carbonyl is tetracobalt dodecacarbonyl.
- 4. A process as defined in claim 1, wherein the reacting is carried out in the presence of carbon monoxide.
- 5. A process as defined in claim 1, wherein the acid anhydride is acetic anhydride and the alkylidene diester is ethylidene diacetate.
Parent Case Info
This is a continuation of application Ser. No. 171,064, filed July 22, 1980, now abandoned.
US Referenced Citations (2)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2016061 |
Nov 1970 |
DEX |
Continuations (1)
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Number |
Date |
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Parent |
171064 |
Jul 1980 |
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