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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2074476Generated: October 29, 2026

Carbon Dioxide → 6-methyl-1H-indazole-5-carboxylic acid

https://huagongshe.com/reaction/2074476

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCarbon DioxideHCID 280—
Reactant5-Bromo-6-methyl-1H-indazoleHCID 24729259—
Reactant5-Bromo-6-fluoro-1H-indazoleHCID 46863923—
ReactantHCID 178418306HCID 178418306—
Product6-methyl-1H-indazole-5-carboxylic acidHCID 22934040—

Reaction Steps

This compound was prepared in a manner similar to that shown in Scheme 3, using 5-bromo-6-methyl-1H-indazole as the starting material, which was prepared in a manner similar to that of 5-bromo-6-fluoro-1H-indazole. The starting material was treated with t-butyl lithium and carbon dioxide to yield 6-methyl-1H-indazole-5-carboxylic acid, which was in turn treated with thiosemicarbazide and polyphosphoric acid to form 94.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07919514B2
Source datasetuspto-grants-2011_04
ORD IDord-6d639d5e083045c9bf61cbad1d1b4277
Source noteuspto-grants-2011_04