Method of preparing terephthalic aldehyde and isophthalic aldehy

Details Method of preparing terephthalic aldehyde and isophthalic aldehy Method of preparing terephthalic aldehyde and isophthalic aldehy

1982-02-22

1984-08-14

Helfin, Bernard

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

Organic compounds

Oxygen containing

570196, C07C 4500

Patent

active

044658656

ABSTRACT:
A method of preparing terephthalic aldehyde or isophthalic aldehyde from p-xylene or m-xylene, which comprises chlorinating the side chain or p or m xylene to a chlorination degree of 2.5 to 3.5, and thereafter contacting the so-chlorinated product with hexamethylenetetramine in aqueous solution at elevated temperature whereby the corresponding aldehyde is obtained.

REFERENCES:
patent: 3081347 (1963-03-01), Leary
patent: 4085147 (1978-04-01), Rosinger et al.
patent: 4108904 (1978-08-01), Brown et al.
patent: 4206152 (1980-06-01), Gosteli

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