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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 490599Generated: October 30, 2026

Piperazin-4-ylacetophenone → 1-(4-{4-[(2S,4S)-1-Benzyl-4-(2,4-difluoro-benzylamino)-pyrrolidine-2-carbonyl]-piperazin-1-yl}-phenyl)-ethanone

https://huagongshe.com/reaction/490599

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperazin-4-ylacetophenoneHCID 97269—
Reactant1-Benzyl-4-[tert-butoxycarbonyl-(2,4-difluoro-benzyl)-amino]-pyrrolidine-2-carboxylic acidHCID 67547470—
Product1-(4-{4-[(2S,4S)-1-Benzyl-4-(2,4-difluoro-benzylamino)-pyrrolidine-2-carbonyl]-piperazin-1-yl}-phenyl)-ethanoneHCID 688611518.1%

Reaction Steps

As described for Example 1f, 1-benzyl-4-[tert-butoxycarbonyl-(2,4-difluoro-benzyl)-amino]-pyrrolidine-2-carboxylic acid (60.0 mg, 0.134 mmol) was converted, using 1-(4-piperazine-1-yl-phenyl)-ethanone instead of 2-piperazin-1-yl-benzonitrile, to the title compound (5.8 mg, 8.1%) as light yellow oil. MS m/e=559.4 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07528136B2
Source datasetuspto-grants-2009_05
ORD IDord-402236c1234845948d9fa091f3263b77
Source noteuspto-grants-2009_05