METHOD FOR PRODUCING 2-IODOSOBENZOIC ACIDS

WIPO Patent Application WO/2020/130081

A1

The purpose of the present invention is to provide a method for producing iodosobenzoic acids relatively safely, without requiring any expensive reagent. The present invention is a method for producing a compound represented by formula (I) or formula (II) [in the formulas, Ar represents a benzene or the like; R1 , R21 and R22 each independently represent a halogen or the like; m represents an integer of 0 to 4 when n is 0, represents 0, 1 or 2 when n is 1, n represents 0 or 1, and r and r' each independently represent 0 or 1], the method including a step in which a compound represented by formula (III) or formula (IV) [in the formula, Q and Q' represent a hydrogen atom, an alkali metal atom and the like; x and x' represent 2+ or +; y and z represent 1 or 2; Ar, R1, X, R21, R22, m and n are as defined above] is oxidized at 0°C to 100°C in a solvent selected from water and a mixed solvent of water and an organic solvent, in the presence of at least one persulfate selected from monopotassium peroxomonosulfuric acid and oxone.

DOHI TOSHIFUMI (JP)
CHINA HIDEYASU (JP)

PCT/JP2019/049848

June 25, 2020

December 19, 2019

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RITSUMEIKAN TRUST (JP)

C07D347/00; C07B61/00; C07D517/04; C07D517/14

JP2004523524A

2004-08-05

DOHI, T. ET AL.: "Hypervalent iodine reagents as a new entrance to organocatalysts", CHEMICAL COMMUNICATIONS, 2009, pages 2073 - 2085, XP008163797, DOI: 10.1039/B821747E
REN, J. ET AL.: "Selective oxidation of 1- tetralones to 1,2-naphthoquinones with IBX and to 1,4-naphthoquinones with Oxone and 2-iodobenzoic acid", SYNTHESIS, vol. 47, no. 15, 2015, pages 2270 - 2280, XP055460065, DOI: 10.1055/s-0034-1380657

SAEGUSA & PARTNERS (JP)

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