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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2095564Generated: October 31, 2026

2-Chloro-4-isocyanato-1-(trifluoromethyl)benzene → (S)-4-[4-((S)-4-Hydroxy-6-aza-spiro[2.5]oct-6-yl)-4-oxo-butyl]-2-methyl-3-oxo-piperazine-1-carboxylic acid (3-chloro-4-trifluoromethyl-phenyl)-amide

https://huagongshe.com/reaction/2095564

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Chloro-4-isocyanato-1-(trifluoromethyl)benzeneHCID 14368497—
ReactantHCID 67074162HCID 67074162—
Product(S)-4-[4-((S)-4-Hydroxy-6-aza-spiro[2.5]oct-6-yl)-4-oxo-butyl]-2-methyl-3-oxo-piperazine-1-carboxylic acid (3-chloro-4-trifluoromethyl-phenyl)-amideHCID 6708691083%

Reaction Steps

In analogy to the procedure described in Example 30, (S)-1-[4-((S)-4-hydroxy-6-aza-spiro[2.5]oct-6-yl)-4-oxo-butyl]-3-methyl-piperazin-2-one (intermediate 13) and 2-chloro-4-isocyanato-1-trifluoromethyl-benzene (intermediate 16) gave the titled compound in 83% yield as white foam. MS: 531.20 (MH+, 1Cl).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08445674B2
Source datasetuspto-grants-2013_05
ORD IDord-0f58cfbbb83842ac867e19bc7170e323
Source noteuspto-grants-2013_05