HuagongsheHuagongshe Chemistry Print Report · For research reference only
Lawesson's reagent → (2S,4R)-4-(2-Chloro-4-fluoro-benzenesulfonyl)-1-(2-cyclobutyl-5-methyl-2H-pyrazol-3-yl)-pyrrolidine-2-carboxylic Acid Methyl Ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Lawesson's reagent | HCID 87949 | — |
| Reactant | Cyclobutylhydrazine--hydrogen chloride (1/1) | HCID 19432792 | — |
| Reactant | (2S,4R)-methyl 4-(2-chloro-4-fluorophenylsulfonyl)-1-(3-oxobutanoyl)pyrrolidine-2-carboxylate | HCID 86646855 | — |
| Product | (2S,4R)-4-(2-Chloro-4-fluoro-benzenesulfonyl)-1-(2-cyclobutyl-5-methyl-2H-pyrazol-3-yl)-pyrrolidine-2-carboxylic Acid Methyl Ester | HCID 67278407 | — |
Reaction Steps
In analogy to the procedure described in example 192 h, (2S,4R)-4-(2-chloro-4-fluoro-benzenesulfonyl)-1-(3-oxo-butyryl)-pyrrolidine-2-carboxylic acid methyl ester was reacted with Lawesson's reagent (CAS Reg. No. 19172-47-5) and cyclobutylhydrazine hydrochloride (CAS Reg. No. 158001-21-9) to give the title compound as colorless oil. MS (ESI): m/z=456.2 [M+H]+.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08163793B2 |
| Source dataset | uspto-grants-2012_04 |
| ORD ID | ord-4f43b368285646759fd187abe1b2975f |
| Source note | uspto-grants-2012_04 |