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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 873842Generated: October 31, 2026

6-Amino-2-methyl-2,3-dihydropyridazin-3-one → ethyl 4((4-chlorophenyl)(1-methyl-6-oxo-1,6-dihydropyridazin-3-ylamino)methyl)-1,5-dimethyl-1H-pyrazole-3-carboxylate

https://huagongshe.com/reaction/873842

Reaction equation

Participants

RoleNameHCIDCharge
Reactant6-Amino-2-methyl-2,3-dihydropyridazin-3-oneHCID 15711912—
Reactantethyl 4-((4-chlorophenyl)(hydroxy)methyl)-1,5-dimethyl-1H-pyrazole-3-carboxylateHCID 117702851—
SolventDichloromethane methanolHCID 21226129—
Productethyl 4((4-chlorophenyl)(1-methyl-6-oxo-1,6-dihydropyridazin-3-ylamino)methyl)-1,5-dimethyl-1H-pyrazole-3-carboxylateHCID 117702908—

Reaction Steps

The title compound was prepared in analogy with the procedure described in Step 1.4 using ethyl 4-((4-chlorophenyl)(hydroxy)methyl)-1,5-dimethyl-1H-pyrazole-3-carboxylate (Step 28.2) and 6-amino-2-methylpyridazin-3(2H)-one (Step 32.1). tR: 4.25 min (HPLC 1); tR: 0.94 min (LC-MS 2); ESI-MS: 416 [M+H]+ (LC-MS 2); Rf=0.43 (CH2Cl2/MeOH 9:1).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08975417B2
Source datasetuspto-grants-2015_03
ORD IDord-9b8440211dba407cbde2ec8280973511
Source noteuspto-grants-2015_03