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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1915759Generated: November 2, 2026

5-chloro-1-methyl-4-nitro-1H-pyrazole → HCID 86679972, compound

https://huagongshe.com/reaction/1915759

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-chloro-1-methyl-4-nitro-1H-pyrazoleHCID 12344836—
Reactanttert-Butyl (3S)-3-ethylpiperazine-1-carboxylateHCID 24820542—
ProductHCID 86679972HCID 86679972—

Reaction Steps

Following the procedure for Intermediate 10 starting from 5-chloro-1-methyl-4-nitro-1H-pyrazole from Example 1 and (S)-tert-butyl 3-ethylpiperazine-1-carboxylate gave (S)-tert-butyl 4-(4-amino-1-methyl-1H-pyrazol-5-yl)-3-ethylpiperazine-1-carboxylate as an orange gum (110 mg, 65% over two steps). LCMS (ES+) m/z 310 (M+1).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08614206B2
Source datasetuspto-grants-2013_12
ORD IDord-2ff3a665b1054fed85504f28d1078040
Source noteuspto-grants-2013_12