Process for the production of 2-alkoxy-4-propen-1-yl-phenols

Details Process for the production of 2-alkoxy-4-propen-1-yl-phenols Process for the production of 2-alkoxy-4-propen-1-yl-phenols

1977-03-21

1979-05-15

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568652, C07C 4100, C07C 4110

Patent

active

041547691

ABSTRACT:
The invention concerns a new process for the production of 2-alkoxy-4-propen-1-yl phenols of the formula ##STR1## in which R represents the methyl or ethyl radical wherein 2-alkoxy phenols of the formula ##STR2## in which R is as defined above, are initially condensed with propionaldehyde in the presence of acid catalysts, and the resulting condensation product is subsequently split by heating in the presence of a basic catalyst to form the phenols of formula I.

REFERENCES:
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patent: 2560173 (1951-07-01), Johnson et al.
patent: 2591651 (1952-04-01), Young
patent: 2829175 (1958-04-01), Bowman et al.
patent: 2862976 (1958-12-01), Dubbs et al.
patent: 2979534 (1961-04-01), Petropoulos et al.
patent: 3281478 (1966-10-01), Farnham
Braun et al., Ann, vol. 472 (1929) 72-79.
Quelet, Compt. Rend., vol. 202 (1936) 956-958.

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