Process for producing p-tolualdehyde

Details Process for producing p-tolualdehyde Process for producing p-tolualdehyde

1974-12-05

1976-04-06

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 4514

Patent

active

039489981

ABSTRACT:
This invention relates to a two step process for producing p-tolualdehyde which comprises reacting toluene with carbon monoxide in the presence of hydrogen fluoride and boron trifluoride, characterized by mixing all of the toluene, all of the hydrogen fluoride and only part of the boron trifluoride necessary to convert a substantial amount of toluene to p-tolualdehyde, thereby forming a toluene-hydrogen fluoride-boron trifluoride complex and reacting the toluene in the reaction system with carbon monoxide, thereby converting a portion of the toluene to p-tolualdehyde, and then adding the remainder of the boron trifluoride to the reaction product and reacting the remainder of the toluene with carbon oxide.

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