Preparation of 6,7-dichloro-1,5-dihydroimidazo ¬2,1- b|...

Details Preparation of 6,7-dichloro-1,5-dihydroimidazo ¬2,1- b|... Preparation of 6,7-dichloro-1,5-dihydroimidazo ¬2,1- b|...

C - Chemistry, Metallurgy

07

D

260/253, 260/242

C07D 239/84 (2006.01) C07C 205/12 (2006.01) C07D 487/04 (2006.01)

Patent

CA 1109067

III. Abstract The known blood platelet antiaggregative agent 6,7-dichloro-1,5-dihydroimidazo[2,1-b]quinazolin-2(3H)- one is prepared in high yield via an improved process involving a novel intermediate of the Formula Image III in which R1 is (lower)alkyl and X is bromo, chloro, or iodo.

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