Preparation of aromatic nitroso compounds

Details Preparation of aromatic nitroso compounds Preparation of aromatic nitroso compounds

1973-09-04

1976-11-02

Sebastian, Leland A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260465R, 260592, 260612D, C07C 8100, C07C 8102, C07C 8106

Patent

active

039897648

ABSTRACT:
A process for the manufacture of nitroso compounds of the benzene series which comprises heating an aromatic nitrobenzene compound with an aldehyde, ketone or alcohol in the presence of a catalyst having a lattice consisting of a heavy metal selected from antimony, bismuth, cerium, chromium, cobalt, copper, germanium, gold, iron, lanthanum, lead, manganese, mercury, molybdenum, neodymium, nickel, rhenium, silver, tantalum, thallium, thorium, tin, titanium, tungsten, vanadium and zirconium, in association with oxygen atoms or hydroxyl, carbonate or phosphate ions and having at least one other of said heavy metals forming impurity atoms in the lattice. This process is related to those described in U.S. Pat. Nos. 3,578,720 and 3,700,605 but replaces the carbon monoxide used as reducing agent by an aldehyde, ketone or alcohol, especially a lower aliphatic alcohol, with consequent advantages in lower toxicity and ease of control of the process. The preferred reducing agent is methanol.

REFERENCES:
patent: 3578720 (1971-05-01), Dodman et al.

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