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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 221816Generated: October 30, 2026

Boron tribromide → 5-(4-Hydroxyphenyl)-2-methyl-2H-pyridazin-3-one

https://huagongshe.com/reaction/221816

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBoron tribromideHCID 25134—
Reactant5-(4-methoxy-phenyl)-2-methyl-2H-pyridazin-3-oneHCID 56946198—
Product5-(4-Hydroxyphenyl)-2-methyl-2H-pyridazin-3-oneHCID 56946199—

Reaction Steps

5-(4-Hydroxyphenyl)-2-methyl-2H-pyridazin-3-one was prepared from 5-(4-methoxy-phenyl)-2-methyl-2H-pyridazin-3-one with BBr3 using the procedure described in Example 86 Step 2; Mp 296-8° C.; MS m/z 203 (M+H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08207168B2
Source datasetuspto-grants-2012_06
ORD IDord-74b38739f7a74239ab1b19a240fb3859
Source noteuspto-grants-2012_06