Method of producing substituted benzaldehydes with catalytic amo

Details Method of producing substituted benzaldehydes with catalytic amo Method of producing substituted benzaldehydes with catalytic amo

1999-03-16

2000-06-27

Padmanabhan, Sreeni

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

Organic compounds

Oxygen containing

568437, C07C 4549

Patent

active

060808926

ABSTRACT:
This invention relates to a process for preparing specific substituted benzaldehydes through the reaction of substituted benzenes with carbon monoxide and aluminum chloride at a relatively low pressure, at a low temperature, and in the presence of at most a catalytic amount of acid (preferably aqueous HCl) and a solvent. The resultant substituted benzaldehydes are useful as precursors to the formation of a number of different compounds, such as dyestuffs, flavorings, fragrances, nucleating agents, polymer additives, and the like. The inventive method provides a very cost-effective and safe procedure for producing such substituted benzaldehydes at very high yields.

REFERENCES:
patent: 1776154 (1930-09-01), Knorr et al.
patent: 1935914 (1933-11-01), Olson
patent: 1939005 (1933-12-01), Guthke
patent: 1989700 (1935-02-01), Larson
patent: 2053233 (1936-09-01), Woodhouse
patent: 2158518 (1939-05-01), Meuly
patent: 2158519 (1939-05-01), Meuly
patent: 2271299 (1942-01-01), Ipatieff et al.
patent: 2311232 (1943-02-01), Ipatieff et al.
patent: 3369048 (1968-02-01), Hamilton et al.
patent: 4195040 (1980-03-01), Renner
patent: 4554383 (1985-11-01), Knifton
patent: 4622429 (1986-11-01), Blank et al.
patent: 5457239 (1995-10-01), Frank et al.
patent: 5679867 (1997-10-01), Bruce et al.
Doko, Yoshiji et al., "Formylation of Methylnaphthalene Compounds with CO in HF-BF.sub.3 Medium", Sekiyu Gakkaishi, 40, (2), pp. 115-123 (1997).

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