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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2095557Generated: November 1, 2026

Benzene, 1-chloro-3-isocyanato- → (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-phenyl)-amide

https://huagongshe.com/reaction/2095557

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzene, 1-chloro-3-isocyanato-HCID 17968—
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-phenyl)-amideHCID 6707430517%

Reaction Steps

In analogy to the procedure described in Example 25, (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 3-chlorophenyl isocyanate gave the titled compound in 17% yield as white foam. MS: 463.2 (MH+, Cl).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08445674B2
Source datasetuspto-grants-2013_05
ORD IDord-e443a224eea14dab9e43a6e7002badcc
Source noteuspto-grants-2013_05