Process for the preparation of isovanillin

Details Process for the preparation of isovanillin Process for the preparation of isovanillin

1995-10-23

1997-07-15

Reamer, James H.

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

Organic compounds

Oxygen containing

C07C 4565

Patent

active

056485522

ABSTRACT:
The present invention relates to a novel process for the preparation of isovanillin.
The process for the preparation of isovanillin according to the invention is characterized in that it consists in dealkylation being carried out using a strong acid, selectively in the 3-position, on a 3-alkoxy-4-methoxybenzaldehyde wherein said alkoxy group has at least two carbon atoms.

REFERENCES:
patent: 3007968 (1961-11-01), Alt
patent: 3367972 (1968-02-01), Gitchel et al.
patent: 4065504 (1977-12-01), Findlay
patent: 4453004 (1984-06-01), Nelson
patent: 4453017 (1984-06-01), Nelson
patent: 4473713 (1984-09-01), Ratton
patent: 4487975 (1984-12-01), Ratton

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