1,3-oxazolium-5-oxides or their alpha-amidoketene tautomers,...

Details 1,3-oxazolium-5-oxides or their alpha-amidoketene tautomers,... 1,3-oxazolium-5-oxides or their alpha-amidoketene tautomers,...

C - Chemistry, Metallurgy

07

D

C07D 263/20 (2006.01) C07D 205/085 (2006.01) C07D 207/34 (2006.01) C07D 263/42 (2006.01) C07D 317/60 (2006.01) C07D 405/04 (2006.01) C07D 409/06 (2006.01) C07D 471/04 (2006.01)

Patent

CA 2387644

The invention provides a process for making 1,3-oxazolium-5-oxides and their .alpha.-amide substituted ketene tautomer from reaction of in situ generated imminium salts or their .alpha.-substituted amide isomer with carbone monoxide in the presence of a metal catalyst and an agent capable of removing acid generated during the process.

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