HuagongsheHuagongshe Chemistry Print Report · For research reference only
Imidazole → (2S,4S)-1-tert-Butyl 2-methyl 4-((tert-butyldimethylsilyl)oxy)pyrrolidine-1,2-dicarboxylate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Imidazole | HCID 795 | — |
| Reactant | tert-Butyldimethylsilyl chloride | HCID 28928 | — |
| Reactant | N-Boc-cis-4-hydroxy-L-proline methyl ester | HCID 10752873 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | (2S,4S)-1-tert-Butyl 2-methyl 4-((tert-butyldimethylsilyl)oxy)pyrrolidine-1,2-dicarboxylate | HCID 11371823 | 95.7% |
Reaction Steps
A mixture of (2S,4S)-1-tert-butyl 2-methyl 4-hydroxypyrrolidine-1,2-dicarboxylate (10 g, 40.7 mmol), imidazole (5.54 g, 81.4 mmol) and t-butyldimethylsilyl chloride (6.6 g, 45 mmol) in DMF (50 ml) was stirred and r.t. for 4 days. The mixture was diluted with EtOAc and washed with H2O and sat. NH4Cl. The organic layer was dried over MgSO4 and concentrated. 14 g of an oil product was obtained and used without further purification.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07879855B2 |
| Source dataset | uspto-grants-2011_02 |
| ORD ID | ord-af3bfa55efbf414b8ac5091be1698b94 |
| Source note | uspto-grants-2011_02 |