Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1981-07-13
1983-08-16
Helfin, Bernard
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
423 94, C07C 4542, C07C 4543
Patent
active
043993117
ABSTRACT:
In a process for producing aromatic aldehydes by reacting chlorinated methylbenzenes with nitric acid, the improvement wherein a lead compound is added to the residue left after separation and recovery of the resulting aromatic aldehydes from the reaction mixture thereby to remove a chlorine ion present in the residue as a precipitate of lead chloride, and the residue left after removal of the lead chloride is recycled to the reaction of the chlorinated methylbenzenes with nitric acid.
REFERENCES:
patent: 4335263 (1982-06-01), Minai
Toki Tsukasa
Uchiyama Seiji
Wakatsuki Misuzu
Yoshinaka Shigeo
Helfin Bernard
Mitsubishi Gas Chemical Company Inc.
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