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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1834129Generated: October 30, 2026

Triethylamine → HCID 20348927, compound

https://huagongshe.com/reaction/1834129

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 mixture is 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° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04069231
Source datasetuspto-grants-1978_01
ORD IDord-695607b4bcea4200881339afd60a9fc3
Source noteuspto-grants-1978_01