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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 323645Generated: October 30, 2026

Hydrogen Bromide → HCID 178515075, compound

https://huagongshe.com/reaction/323645

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
ReactantMethanesulfonic AcidHCID 6395—
ReactantHCID 178492082HCID 178492082—
ProductHCID 178515075HCID 178515075—

Reaction Conditions

Temperature110 °C

Reaction Steps

To a 50 mL solution of 5:1 48% HBr:methanesulfonic acid was added 7-chloro-4-hydroxy-2-(4-methoxyphenyl)-1,2,5,10-tetrahydropyridazino[4,5-b]quinoline-1,10-dione (1.0328 g, 27.9 mM). The resulting suspension was heated to 110° C. over 3.5 hours. HPLC analysis afforded a total conversion to a new material. The suspension was cooled to room temperature and filtered through a Buchner funnel. The yellow solid was washed 2× with 100 mL portions of distilled water followed by 200 mL of a 1:1 solution of THF:ether. The material was then washed with hexanes until the yellow solid was free flowing. This solid was allowed to air dry for 72 hours prior to submission for analysis. No percent yield was recorded for this reaction.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06214826B1
Source datasetuspto-grants-2001_04
ORD IDord-93d7a6e7c67d4febb3e163d097eed7e3
Source noteuspto-grants-2001_04