VERFAHREN ZUR HERSTELLUNG VON OXIMETHERN DURCH UMSETZUNG VON OXAMIN MIT DIALKYLCARBONATEN

• Main Authors: WINGERT, HORST, KEIL, MICHAEL
• Format: Patent
• Language: German
• Published: 15.06.1999
• Edition: 6
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

PCT No. PCT/EP95/04580 Sec. 371 Date May 20, 1997 Sec. 102(e) Date May 20, 1997 PCT Filed Nov. 21, 1995 PCT Pub. No. WO96/16932 PCT Pub. Date Jun. 6, 1996A process for preparing oxime ethers of the general formula I I where R1 is a C-organic radical, R2 is hydrogen, alkoxy, cyano, nitro, SOR4, SO2R4, CO2-alkyl, P(O)(OR4)2 or a C-organic radical, and R3 and R4 are unsubstituted or substituted C1-C6-alkyl, entails converting an oxime of the general formula II II where the substituents R1 and R2 have the abovementioned meanings, in the presence or absence of an organic diluent, with a base into the corresponding salt, and reacting the latter with a dialkyl carbonate of the general formula III III where R3 has the abovementioned meanings.