Method of producing dialkyl- and trialkyl-substituted benzaldehy

Details Method of producing dialkyl- and trialkyl-substituted benzaldehy Method of producing dialkyl- and trialkyl-substituted benzaldehy

1999-03-16

2000-07-11

Padmanabhan, Sreeni

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

Organic compounds

Oxygen containing

568437, C07C 4549

Patent

active

060875372

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 an acid (preferably aqueous HCl). 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.

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