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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1576321Generated: October 30, 2026

Ethanolamine → HCID 21511885, compound

https://huagongshe.com/reaction/1576321

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolamineHCID 700—
ReactantHCID 4702294HCID 4702294—
SolventDimethyl SulfoxideHCID 679—
ProductHCID 21511885HCID 2151188556.6%

Reaction Conditions

Temperature100 °C

Reaction Steps

To a solution of 7.75 g of 2-trichloroacetamido-5-nitrobenzophenone in 50 ml. of dimethylsulfoxide was added 1.47 g of monoethanolamine, and the mixture was heated at 100°C for 2 hours. After cooling, the reaction mixture was poured into 500 ml. of water and the resulting precipitate was collected by filtration, washed successively with water and ether to give 3.52 g of 9-nitro-2,3,6,10b-tetrahydro-10b-phenyl-5H-oxazolo[3,2-C]quinazolin-5-one, having a melting point of 275°-276°C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03980645
Source datasetuspto-grants-1976_09
ORD IDord-88735abbaebf4cd2933ba64dc4a1151f
Source noteuspto-grants-1976_09