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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1578498Generated: November 4, 2026

m-Chloroperbenzoic acid → 7-Chloro-1-methyl-3-(methylsulfonyl)-4(1H)-cinnolinone

https://huagongshe.com/reaction/1578498

Reaction equation

Participants

RoleNameHCIDCharge
Reactantm-Chloroperbenzoic acidHCID 70297—
Reactant1-methyl-3-(methylsulfonyl)cinnolin-4(1H)-oneHCID 12421487—
Reactant7-chloro-1-methyl-3-(methylsulfinyl)-4(1H)-cinnolinoneHCID 21559126—
SolventChloroformHCID 6212—
Product7-Chloro-1-methyl-3-(methylsulfonyl)-4(1H)-cinnolinoneHCID 21559129—

Reaction Steps

This was prepared by oxidizing a solution of 10 g of 7-chloro-1-methyl-3-(methylsulfinyl)-4(1H)-cinnolinone in 500 ml of CHCl3 with 7.5 g of m-chloroperbenzoic acid in analogous fashion to 1-methyl-3-(methylsulfonyl)-4(1H)-cinnolinone. The material was recrystallized from CH3CN, m.p. 270°-72°; yield 7.5 g (71%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03937704
Source datasetuspto-grants-1976_02
ORD IDord-67ff0b3de7a543ed9f74d3ddf356c350
Source noteuspto-grants-1976_02