Method of preparing alkoxymethylene compounds

Details Method of preparing alkoxymethylene compounds Method of preparing alkoxymethylene compounds

1979-02-26

1981-07-07

Brust, Joseph Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2604656, 560174, 568391, 568413, C07C12000, C07C12130, C07C121453, C07C121413

Patent

active

042774187

ABSTRACT:
An improvement in the alkoxylation of a compound having a reactive methylene group by contacting said compound with an orthoformic acid trialkyl ester in the presence of a catalyst, the improvement residing in employing at least 1.6 moles of orthoformic acid ester per mole of compound having a reactive methylene group and carrying out the process in the presence of a catalyst of the group of aliphatic carboxylic acids, anhydrides of aliphatic carboxylic acids, aromatic sulphonic acids, alkali metal alcoholates and alkanolamines.

REFERENCES:
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patent: 2824121 (1958-02-01), Nicholl et al.
patent: 4058553 (1977-11-01), Ackermann et al.
Fuson et al., J. Org. Chem., 11, (1946), pp. 194-198.
Post et al., J. Org. Chem., 2 (1937), pp. 260-266.
Claisen, Ber., 26, (1893), pp. 2729-2735.
Claisen, Ann., 297, (1897), pp. 19-20.
Passalacqua, C. A., 8, (1914), p. 1273.

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