HuagongsheHuagongshe Chemistry Print Report · For research reference only
4-Methylmorpholine → (R)-2-(6-Chloro-4'-ethoxycarbonyl-biphenyl-3-ylcarbamoyl)-pyrrolidine-1-carboxylic acid tert-butyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 4-Methylmorpholine | HCID 7972 | — |
| Reactant | (2R)-1-[(tert-butoxy)carbonyl]pyrrolidine-2-carboxylic acid | HCID 688022 | — |
| Reactant | Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1) | HCID 2733084 | — |
| Reactant | 5'-Amino-2'-chloro-biphenyl-4-carboxylic acid ethyl ester | HCID 59822374 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | (R)-2-(6-Chloro-4'-ethoxycarbonyl-biphenyl-3-ylcarbamoyl)-pyrrolidine-1-carboxylic acid tert-butyl ester | HCID 67374244 | 73.9% |
Reaction Steps
A mixture of 5′-amino-2′-chloro-biphenyl-4-carboxylic acid ethyl ester (800 mg), (R) —N-Boc-2-pyrrolidinecarboxylic acid (608 mg) and HBTU (1.46 g) in dry DMF (30 ml) containing N-methylmorpholine (1.26 ml) was stirred at room temp for 18 h. Silica gel (5 g) was then added and the mixture evaporated. The residue was purified by chromatography. Elution with 12:1 petrol:ethyl acetate gave a viscous brown gum (987 mg)
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08008303B2 |
| Source dataset | uspto-grants-2011_08 |
| ORD ID | ord-2a585386445846e38c8bd26c633fbfcc |
| Source note | uspto-grants-2011_08 |