C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/314
C07D 233/64 (2006.01) C07C 323/44 (2006.01) C07D 233/54 (2006.01)
Patent
CA 1199030
ABSTRACT PRODUCTION OF IMIDAZOLES A new process is described for the production of 4- methyl-5-imidazoles, particularly Cimetidine of the for- mula Image by the following series of reactions Image Image Image Image wherein Alk1 preferably is -CH2-CH2- and Alk2 preferably CH3. The process is unexpectedly carried out in extremely good yields.
438623
Alhede Býrge
Clausen Finn P.
Gelting Niels
Preikschat Herbert
A/s Gea Farmaceutisk Fabrik
Marks & Clerk
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