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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1856578Generated: October 30, 2026

Ammonia → N-(2-aminophenyl)-N'-[2-{4-[1-(4-fluorophenylmethyl)-1H-benzimidazol-2-ylamino]-1-piperidinyl}-ethyl]thiourea

https://huagongshe.com/reaction/1856578

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
ReactantHydrochloric AcidHCID 313—
ReactantEthanolHCID 702—
ReactantN-[2-{4-[1-(4-fluorophenylmethyl)-1H-benzimidazol-2-ylamino]-1-piperidinyl}ethyl]-N'-(2-nitrophenyl)thioureaHCID 12891743—
CatalystIronHCID 23925—
SolventMethanolHCID 887—
SolventWaterHCID 962—
ProductN-(2-aminophenyl)-N'-[2-{4-[1-(4-fluorophenylmethyl)-1H-benzimidazol-2-ylamino]-1-piperidinyl}-ethyl]thioureaHCID 53859676—

Reaction Steps

A mixture of 3.7 parts of N-[2-{4-[1-(4-fluorophenylmethyl)-1H-benzimidazol-2-ylamino]-1-piperidinyl}ethyl]-N'-(2-nitrophenyl)thiourea, 7 parts of iron-powder, 0.25 parts of concentrated hydrochloric acid, 48 parts of ethanol and 15 parts of water is stirred and refluxed for 1 hour. The reaction mixture is alkalized with methanol saturated with ammonia. The whole is filtered and the filtrate is evaporated, yielding 3.5 parts of N-(2-aminophenyl)-N'-[2-{4-[1-(4-fluorophenylmethyl)-1H-benzimidazol-2-ylamino]-1-piperidinyl}-ethyl]thiourea as a residue.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04219559
Source datasetuspto-grants-1980_08
ORD IDord-1bc9e4f19d9b4f28974e0f8c7b283280
Source noteuspto-grants-1980_08