Claims
- 1. A method of producing anisaldehyde, which comprises introducing a manganic alum wherein the manganate ion has a plus 3 valence and is obtained by oxidizing in an electrolytic cell a mixture of manganese sulfate, potassium or sodium sulfate and sulfuric acid, into a reaction chamber containing approximately 8% by weight of sulfuric acid; adding to the chamber p-methoxytoluene; and while the oxidation proceeds, controlling the acid concentration to between about 21/2 to 81/2 % by weight of sulfuric acid, the temperature within the reaction chamber to not substantially exceed more than about 30.degree. C., and the ratio of para-methoxytoluene to anisaldehyde to between approximately 3 : 1 and not less than about 2 : 1, whereby anisaldehyde of relatively high purity is obtained with a consequent minimum level of tars and anisic acid.
- 2. A method of producing anisaldehyde as defined in claim 1, in which upon completion of the oxidation reaction the anisaldehyde produced is separated from the para-methoxytoluene and said excess para-methoxytoluene returned to the reaction chamber.
Parent Case Info
This is a continuation of application Ser. No. 384,778, Filed Aug. 1, 1973, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
2450877 |
Carpenter et al. |
Oct 1948 |
|
3665030 |
D'Ostrowick et al. |
May 1972 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
62,426 |
Nov 1957 |
IN |
Non-Patent Literature Citations (3)
Entry |
Ramaswamy et al., J. Electrochemical Soc., vol. 110 (1963) 202-204. |
Kagami, Chem. Abstract, 68 (1968) 63033a. |
Rocek, Chem. Abstract, 70 (1969) 28088d. |
Continuations (1)
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Number |
Date |
Country |
Parent |
384778 |
Aug 1973 |
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