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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2425662Generated: October 24, 2026

Piperazin-2-one → 4-{(4S,5R)-4,5-Bis-(4-chloro-phenyl)-2-[2-ethoxy-4-(2-hydroxy-1,1-dimethyl-ethyl)-phenyl]-4,5-dihydro-imidazole-1-carbonyl}-piperazin-2-one

https://huagongshe.com/en/reaction/2425662

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperazin-2-oneHCID 231360—
Reactant(4S,5R)-4,5-bis-(4-chloro-phenyl)-2-[2-ethoxy-4-(2-hydroxy-1,1-dimethyl-ethyl)-phenyl]-4,5-dihydro-imidazole-1-carbonyl chlorideHCID 86602323—
Product4-{(4S,5R)-4,5-Bis-(4-chloro-phenyl)-2-[2-ethoxy-4-(2-hydroxy-1,1-dimethyl-ethyl)-phenyl]-4,5-dihydro-imidazole-1-carbonyl}-piperazin-2-oneHCID 11650185—

Reaction Steps

4-{(4S,5R)-4,5-Bis-(4-chloro-phenyl)-2-[2-ethoxy-4-(2-hydroxy-1,1-dimethyl-ethyl)-phenyl]-4,5-dihydro-imidazole-1-carbonyl}-piperazin-2-one was prepared from (4S,5R)-4,5-bis-(4-chloro-phenyl)-2-[2-ethoxy-4-(2-hydroxy-1,1-dimethyl-ethyl)-phenyl]-4,5-dihydro-imidazole-1-carbonyl chloride (example 12g) and 2-piperazinone (Avocado Organics) in an analogous manner as described in example 25. LR-MS: 609.4 [(M+H)+]

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07964724B2
Source datasetuspto-grants-2011_06
ORD IDord-1c2cfc8e44b2473fbd1aba89ed944f7a
Source noteuspto-grants-2011_06