Benzodiazepine

Details Benzodiazepine Benzodiazepine

C - Chemistry, Metallurgy

07

D

260/240.5

C07D 243/26 (2006.01) C07D 243/14 (2006.01)

Patent

CA 1044232

ABSTRACT OF THE DISCLOSURE The 7-chloro-1-[2-diethylamino-ethyl]-5-(o-fluoro- phenyl)-1,3-dihydro-2H-1,4-benzodiazepinone which is a hypnotic drug is produced by a Gringnard reaction of 7-chloro-1-[2-diethyl- amino) ethyl]-1,3-dihydro-2H-1,4-benzodiazepin-2-one-4-oxide with o-fluorophenyl magnesium bromide in situ in the presence of 1,2-dibromoethane followed by dehydration of the product obtained.

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