Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 614916Generated: October 30, 2026

Carbamic acid, ethyl ester → HCID 21327523, compound

https://huagongshe.com/reaction/614916

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCarbamic acid, ethyl esterHCID 5641—
ReactantHCID 21327505HCID 21327505—
CatalystZincchlorideHCID 3007855—
SolventChloroformHCID 6212—
ProductHCID 21327523HCID 21327523—

Reaction Conditions

Temperature180 °C

Reaction Steps

A mixture of 3.42 g of 2-(2-thenylamino)-5-nitrobenzhydrol, 6 g of ethyl carbamate and 0.5 g of zinc chloride was heated at 180° C. (bath temperature) for 2 hours. After cooling, the reaction mixture was dissolved in chloroform and the chloroform solution was washed with water and dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure to give 1-(2-thenyl)-4-phenyl-6-nitro-3,4-dihydro-2(1H)-quinazolinone.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04146717
Source datasetuspto-grants-1979_03
ORD IDord-0fcccbafcc4643a8912caaf33f40e386
Source noteuspto-grants-1979_03