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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1729892Generated: October 30, 2026

Sulfuric Acid → HCID 21406503, compound

https://huagongshe.com/reaction/1729892

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
ReactantHCID 11184364HCID 11184364—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 21406503HCID 2140650398.2%

Reaction Steps

A solution of α-methyl-α-hydroxyfluorene-2-acetic acid (5.7 g) and sulfuric acid (11.4 ml) in dioxane (300 ml) is refluxed for 2 hours. The reaction mixture is poured into ice water and extracted with ether. The ether extracts are washed with water, dried (MgSO4), and evaporated to give the title compound (5.2 g, mp 183°-185°). The analytical sample is prepared by recrystallization from 95% ethanol, mp 190°-191°, λKBr 880 cm-1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03989841
Source datasetuspto-grants-1976_11
ORD IDord-c089f2b358f0439bb0c2e0f5c4cfd2a5
Source noteuspto-grants-1976_11