HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → Rac-4-{[(2r,3s,4r,5s)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-piperidine-1-carboxylic acid tert-butyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | 4-Amino-1-Boc-piperidine | HCID 1268291 | — |
| Reactant | Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1) | HCID 9886157 | — |
| Reactant | rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carboxylic acid trifluoroacetic acid | HCID 86640317 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | Rac-4-{[(2r,3s,4r,5s)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-piperidine-1-carboxylic acid tert-butyl ester | HCID 59249674 | 38% |
Reaction Steps
In a manner similar to the method described in Examples 42c, 42d, rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carboxylic acid trifluoroacetic acid prepared in Example 52c (1.8 g, 3.1 mmol) was reacted with 4-Amino-piperidine-1-carboxylic acid tert-butyl ester(Aldrich, 931 mg, 4.65 g, 4.65 mmol), HATU (2.12 g, 0.92 mmol) and iPr2NEt (2.7 mL, 15.5 mmol) in CH2Cl2 at room temperature overnight, then reacted with aqueous HCl solution in tetrahydrofuran at room temperature for 2 h to give a white solid (0.758 g, 38%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08354444B2 |
| Source dataset | uspto-grants-2013_01 |
| ORD ID | ord-09a1a9af766a4a4bb2133569cdf9a1f4 |
| Source note | uspto-grants-2013_01 |