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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2072402Generated: October 30, 2026

HCID 53887742, compound → 3-Amino-4-chloroindazole

https://huagongshe.com/reaction/2072402

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHCID 53887742HCID 53887742—
SolventDiethyl PyrocarbonateHCID 3051—
Product3-Amino-4-chloroindazoleHCID 313444—

Reaction Steps

Analogously to Example 1, 0.2 mol of 3-amino-4-chloroindazole in 100 ml of pyrocarbonic acid diethyl ester gives 3-amino-4-chloroindazole-2-carboxylic acid ethyl ester (melting point: 109°-111° C; 63% of theory) in 3 hours at 20°-30° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04051252
Source datasetuspto-grants-1977_09
ORD IDord-4bfef3b3d31a4d5592e8224df3caf8a3
Source noteuspto-grants-1977_09