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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1697756Generated: October 25, 2026

Cyclobutylhydrazine → (2S,4R)-1-(2-Cyclobutyl-5-methyl-2H-pyrazol-3-yl)-4-cyclopropylmethanesulfonyl-pyrrolidine-2-carboxylic Acid Methyl Ester

https://huagongshe.com/reaction/1697756

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCyclobutylhydrazineHCID 18699355—
Reactant(2S,4R)-4-Cyclopropylmethanesulfonyl-1-(3-oxo-thiobutyryl)-pyrrolidine-2-carboxylic Acid Methyl EsterHCID 86646864—
Product(2S,4R)-1-(2-Cyclobutyl-5-methyl-2H-pyrazol-3-yl)-4-cyclopropylmethanesulfonyl-pyrrolidine-2-carboxylic Acid Methyl EsterHCID 66770771—

Reaction Steps

In analogy to the procedure described in example 192 h, (2S,4R)-4-cyclopropylmethanesulfonyl-1-(3-oxo-thiobutyryl)-pyrrolidine-2-carboxylic acid methyl ester (example 445c) was reacted with cyclobutylhydrazine (CAS Reg. No. 742673-64-9) to give the title compound as brown solid. MS (ESI): m/z=382.2 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08163793B2
Source datasetuspto-grants-2012_04
ORD IDord-47c36f27824e483fa98a6365e27231d1
Source noteuspto-grants-2012_04