Process for the preparation of 5-acylamino-2,4,6- triiodo-or...

Details Process for the preparation of 5-acylamino-2,4,6- triiodo-or... Process for the preparation of 5-acylamino-2,4,6- triiodo-or...

C - Chemistry, Metallurgy

07

C

260/550.4, 260/4

C07C 237/46 (2006.01) A61K 49/04 (2006.01) C07C 233/00 (2006.01) C07C 233/12 (2006.01)

Patent

CA 1327600

- 62 - ABSTRACT A PROCESS FOR THE PREPARATION OF 5-ACYLAMINO-2,4,6-TRI- IODO- OR TRIBROMO-BENZOIC ACID DERIVATIVES AND CORRESPOND- ING NOVEL 5-ACYLAMINO-2,4,6-TRIIODO OR TRIBROMO-BENZOIC ACID DERIVATIVES OBTAINED BY SAID PROCESS. A process for the preparation of 5-acylamino-2,4,6-triiodo or tribromo-benzoic acid derivatives of formula I Image I, wherein: X is I or Br, R is H or a variously substituted alkyl, or a group of formula Image wherein X has the above meanings; Y is hydroxy, alkoxy, hydroxyalkoxy, alkylamino or hydroxyalkylamino; - 63 - Z may be the same as COY or it is hydroxyalkylaminocarbonyl provided that at least one of the two acyl or R groups is hydroxy-substituted, which process comprises the rearrangement of the corresponding 5-(alkylaminocarbonyl-alkoxy)-2,4,6-triiodo or tribromobenzoic acid derivatives, in the presence of bases.

567436

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