Process for the manufacture of nitrophenetoles

Details Process for the manufacture of nitrophenetoles Process for the manufacture of nitrophenetoles

1983-01-07

1984-10-23

Helfin, Bernard

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

Organic compounds

Oxygen containing

C07C 7935, C07C 4116

Patent

active

044790155

ABSTRACT:
The present invention relates to a process for the manufacture of ortho - or para-nitrophenetole. According to the invention, the respective nitrochlorobenzene is reacted with ethanol and alkali hydroxide in the presence of a catalyst system which comprises a tetramethylammonium salt of a general formula (CH.sub.3).sub.4 NX, wherein X is Cl.sup.-, Br.sup.-, HSO.sub.4.sup.- or OC.sub.2 H.sub.5, and an aqueous phase. The process has several advantages such as high yields and purity, the products obtained being completely free of side reaction products such as azoxy compounds.

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