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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2294555Generated: October 30, 2026

Benzene → HCID 21474561, compound

https://huagongshe.com/reaction/2294555

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 numberUS05688817
Source datasetuspto-grants-1997_11
ORD IDord-56f44fdd3ecb47baa19d447cb6180d0a
Source noteuspto-grants-1997_11