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US 2021/0261501 A1Published application
Method for Preparation of Potassium 5-Iodo-2-Carboxybenzene Sulfonate
AssigneeLonza Solutions AG
InventorsEllen KLEGRAF, Patrick SCHANEN, Florencio ZARAGOZA DOERWALD
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Abstract
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.
Claims14
A method for the preparation of compound of formula (3),
- the method comprises two steps STEP1 and STEP2,
- in STEP1 compound of formula (2)
- is reacted in a reaction REAC1 with KNO2 in the presence of HCl providing the diazonium salt of compound of formula (2);
- in STEP2 the diazonium salt of compound of formula (2) is reacted in a reaction REAC2 with KI providing compound of formula (3).
1 more element
Dependencies are inferred from the claim text.