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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 267742Generated: November 1, 2026

Triethylamine → HCID 20348927, compound

https://huagongshe.com/reaction/267742

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
ReactantO-Methylhydroxylamine hydrochlorideHCID 521874—
Reactant4-Isocyanato-4,5,6,7-tetrahydro-1-benzothiopheneHCID 20537301—
SolventDichloromethaneHCID 6344—
ProductHCID 20348927HCID 20348927—

Reaction Conditions

Temperature15 °C

Reaction Steps

A mixture of 5 grams of methoxyamine hydrochloride in 60 ml. of methylene chloride is stirred and cooled to 15°C., and 6 grams of triethylamine in 15 ml. of methylene chloride is added. After 20 minutes of stirring, 5.38 grams of 4,5,6,7-tetrahydrobenzo[b]thien-4-yl isocyanate is added dropwise. After stirring an additional 0.5 hour at 15°C. to 20°C., the mixture is stirred at room temperature for 0.5 hour. The mixis then filtered, and the filtrate is washed with water and saturated sodium bicarbonate solution. The filtrate is dried (magnesium sulfate) and evaporated to dryness to afford the title compound which is recrystallized from acetone/hexane to give the product with melting point 138.5°C. to 141.20 C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03944567
Source datasetuspto-grants-1976_03
ORD IDord-b4fe2cad63a44319823ef33c5134b966
Source noteuspto-grants-1976_03