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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1756433Generated: October 28, 2026

Benzene → HCID 21474561, compound

https://huagongshe.com/reaction/1756433

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzeneHCID 241—
ReactantTriethylamineHCID 8471—
ReactantDiphosgeneHCID 10426—
Reactant5,5,8,8-Tetramethyl-5,6,7,8-tetrahydronaphthalen-2-olHCID 268786—
SolventWaterHCID 962—
ProductHCID 21474561HCID 21474561—

Reaction Steps

4.1 g (20 mmol) of 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthol, 1.2 ml of trichloromethyl chloroformate and 40 ml of benzene are introduced into a round-bottomed flask. 3 ml (21 mmol) of triethylamine are added dropwise and the mixture is stirred at room temperature for twelve hours. The reaction medium is poured into water, the mixture is extracted with ethyl ether and the organic phase is separated after settling has taken place, then dried over magnesium sulphate and evaporated. The residue obtained is purified by chromatography on a silica column and eluted with a mixture of dichloromethane and hexane (40:60). After evaporation of the solvents, 4 g (75%) of the expected chloroformate are collected in the form of a colorless oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05439925
Source datasetuspto-grants-1995_08
ORD IDord-fbc6657477b343d8987f4d653aafa89a
Source noteuspto-grants-1995_08