Process for producing p-tolualdehyde from toluene using an alumi

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

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C07C 4549

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active

045543836

ABSTRACT:
A process for the selective carbonylation of toluene to p-tolualdehyde which comprises mixing an N-alkylpyridinium halide and an anhydrous aluminum halide melt catalyst with toluene, at room temperature of higher and at superatmospheric pressure until the desired tolualdehyde is formed, and separating the desired product.

REFERENCES:
patent: 2485237 (1949-10-01), Greshman et al.
patent: 3948998 (1976-04-01), Fujiyama et al.
patent: 4195040 (1980-03-01), Renner
patent: 4218403 (1980-08-01), Vanderpool
Kulka, "Amer. Perfume Aromatics" vol. 69 (Feb. 1969), pp. 31-33.
Gray et al., "J. Amer. Chem. Soc." vol. 103 (1982), pp. 7147-+.

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