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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1891074Generated: October 26, 2026

Sulfuric Acid → HCID 178504584, compound

https://huagongshe.com/reaction/1891074

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
ReactantSodium AzideHCID 33557—
ReactantHCID 178504606HCID 178504606—
SolventDichloromethaneHCID 6344—
ProductHCID 178504584HCID 178504584—

Reaction Conditions

Temperature40 °C

Reaction Steps

324 mg of (RS)-5-bromo-2-[4-(methylsulfinyl)phenylamino]pyrimidin-4-ol and 128 mg of sodium azide are suspended in 6 ml of methylene chloride and mixed drop by drop with 0.3 ml of concentrated sulfuric acid while being cooled with ice. The mixture is stirred for 36 hours at 40° C. The organic phase is decanted off, and the residue is stirred with ice water. The solid is suctioned off, washed twice with water and once with ethanol and dried. 266 mg (78.2% of theory) of the product with a melting point of 230° C. (decomposition) is obtained.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08507510B2
Source datasetuspto-grants-2013_08
ORD IDord-b4c268d8ccae4d1b86c7b359d8813558
Source noteuspto-grants-2013_08