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1. WO2020064753 - METHOD FOR PREPARATION OF POTASSIUM 5-IODO-2-CARBOXYBENZENE SULFONATE

Publication Number WO/2020/064753
Publication Date 02.04.2020
International Application No. PCT/EP2019/075740
International Filing Date 24.09.2019
IPC
C07C 303/22 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
303Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
02of sulfonic acids or halides thereof
22from sulfonic acids by reactions not involving the formation of sulfo or halosulfonyl groups
C07C 309/58 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
309Sulfonic acids; Halides, esters, or anhydrides thereof
01Sulfonic acids
28having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
57containing carboxyl groups bound to the carbon skeleton
58Carboxylic acid groups or esters thereof
C07C 309/61 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
309Sulfonic acids; Halides, esters, or anhydrides thereof
01Sulfonic acids
28having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
57containing carboxyl groups bound to the carbon skeleton
61the carbon skeleton being further substituted by nitrogen atoms, not being part of nitro or nitroso groups
CPC
C07C 303/22
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
303Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
02of sulfonic acids or halides thereof
22from sulfonic acids, by reactions not involving the formation of sulfo or halosulfonyl groups; ; from sulfonic halides by reactions not involving the formation of halosulfonyl groups
Applicants
  • LONZA LTD [CH]/[CH]
Inventors
  • KLEGRAF, Ellen
  • SCHANEN, Patrick
  • ZARAGOZA DOERWALD, Florencio
Agents
  • GREINER, Elisabeth
Priority Data
18196688.825.09.2018EP
18197049.227.09.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR PREPARATION OF POTASSIUM 5-IODO-2-CARBOXYBENZENE SULFONATE
(FR) PROCÉDÉ DE PRÉPARATION DE 5-IODO-2-CARBOXY BENZÈNE SULFONATE DE POTASSIUM
Abstract
(EN)
The invention discloses a method for the preparation of potassium 5-iodo-2-carboxybenzene sulfonate by diazotization of 5-amino-2-carboxybenzene sulfonate and subsequent reaction with KI.
(FR)
L'invention concerne un procédé de préparation de 5-iodo-2-carboxy benzène sulfonate de potassium par diazotation de 5-amino-2-carboxy benzène sulfonate et réaction ultérieure avec du KI.
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