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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1924587Generated: October 31, 2026

Stannous Chloride → 1-Benzo[1,3]dioxol-4-yl-3-(2-benzo[1,3]dioxol-5-yl-2H-pyrazol-3-yl)-1H-pyridazin-4-one

https://huagongshe.com/reaction/1924587

Reaction equation

Participants

RoleNameHCIDCharge
ReactantStannous ChlorideHCID 24479—
Reactant1,3-Benzodioxol-5-ylhydrazineHCID 12658441—
ReactantSodium NitriteHCID 23668193—
Reactant1-Benzo[1,3]dioxol-4-yl-3-((E)-3-dimethylamino-acryloyl)-1H-pyridazin-4-oneHCID 59370005—
Product1-Benzo[1,3]dioxol-4-yl-3-(2-benzo[1,3]dioxol-5-yl-2H-pyrazol-3-yl)-1H-pyridazin-4-oneHCID 46220255—

Reaction Steps

The product was obtained starting from 1-Benzo[1,3]dioxol-4-yl-3-((E)-3-dimethylamino-acryloyl)-1H-pyridazin-4-one (A-14) and benzo[1,3]dioxol-5-yl-hydrazine (prepared from the corresponding amino derivative using sodium nitrite and tin(II) chloride as described in J. Med. Chem. 2003, 46, 4676-4686) according to the method described for example 91. MS: M=403.2 (M+H)+

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08178538B2
Source datasetuspto-grants-2012_05
ORD IDord-03cb6be4a6a44f7db67a35f3e981b455
Source noteuspto-grants-2012_05