Claims
- 1. A process for producing a dialkanoyloxy-benzylidene dialkanoate of the formula (I): ##STR75## wherein X.sup.1 and X.sup.2 are an alkanoyloxy group having from 1 to 18 carbon atoms, which comprises the step:
- (i) reacting a dihydroxybenzaldehyde with an alkanoic acid anhydride of the formula (C.sub.m H.sub.2m+1 --CO).sub.2 O, wherein m is an integer of 1 to 18 in the presence of base with heating or in the presence of strong acid.
- 2. A process for producing a dialkanoyloxy-benzylidene dialkanoate of the formula (I): ##STR76## wherein X.sup.1 and X.sup.2 are, independently, an alkanoyloxy group having from 1 to 18 carbon atoms, which comprises the steps:
- (i) reacting a dihydroxybenzaldehyde with an alkanoic acid anhydride of the formula (C.sub.n H.sub.2n+1 --CO).sub.2 O, wherein n is an integer of 1 to 18, to obtain a dialkanoyloxybenzaldehyde of the formula (II): ##STR77## (ii) reacting said dialkanoyloxybenzaldehyde with an alkanoic acid anhydride of the formula (C.sub.m H.sub.2m+1 --CO).sub.2 O, wherein m is an integer of 1 to 18, in the presence of base with heating or in the presence of strong acid.
- 3. The process according to claims 1 or 2, wherein said base in one member selected from the group consisting of potassium hydroxide, sodium hydroxide, and sodium acetate.
- 4. The process according to claims 1 or 2, wherein said strong acid is one member selected from the group consisting of sulfuric acid, hydrochloric acid, and nitric acid.
Priority Claims (2)
Number |
Date |
Country |
Kind |
58-251692 |
Dec 1983 |
JPX |
|
59-128789 |
Jun 1984 |
JPX |
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Parent Case Info
This is a division of application Ser. No. 06/681,289, filed Dec. 13, 1984 now U.S. Pat. No. 4,758,591.
US Referenced Citations (10)
Foreign Referenced Citations (4)
Number |
Date |
Country |
668388 |
Dec 1965 |
BEX |
55-51018 |
Apr 1980 |
JPX |
57-59807 |
Apr 1982 |
JPX |
58-83619 |
May 1983 |
JPX |
Non-Patent Literature Citations (3)
Entry |
Chemische Berichte, vol. 110, pp. 3664-3671. |
Chemistry of Organic Compounds, pp. 169-173 & 204-205. |
Chemical Abstracts, vol. 92, 33657u. |
Divisions (1)
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Number |
Date |
Country |
Parent |
681289 |
Dec 1984 |
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