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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 126849Generated: October 29, 2026

Ethanol → HCID 20288035, compound

https://huagongshe.com/reaction/126849

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantThiopheneHCID 8030—
ReactantHCID 5047032HCID 5047032—
ReactantHCID 178418361HCID 178418361—
CatalystPlatinumHCID 23939—
SolventMethanolHCID 887—
ProductHCID 20288035HCID 2028803581%

Reaction Steps

To 2 parts of a solution of 2 parts of thiophene in 40 parts of ethanol are added 71 parts of 2-[(4,5-dichloro-2-nitrophenyl)-amino]-ethanol and 400 parts of methanol. The whole is hydrogenated at normal pressure and at room temperature with 2 parts of platinum-on-charcoal catalyst 5%. After the calculated amount of hydrogen is taken up, the catalyst is filtered off and the filtrate is evaporated. The residue is taken up in methylbenzene and the latter is evaporated again. The solid residue is stirred in 2,2' -oxybispropane. The product is filtered off and dried, yielding 50 parts (81%) of 2-[(2-amino-4,5-dichlorophenyl)amino]ethanol; mp. 120° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04254127
Source datasetuspto-grants-1981_03
ORD IDord-ecea52eac0a542f68e0c0baceedf3536
Source noteuspto-grants-1981_03