HuagongsheHuagongshe Chemistry Print Report · For research reference only
Tert-Butylamine → (S)-[2-(4-benzyloxy-phenyl)-1-tert-butylcarbamoyl-ethyl]-carbamic acid tert-butyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Tert-Butylamine | HCID 6385 | — |
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | O-benzyl-N-((tert-butoxy)carbonyl)-L-tyrosine | HCID 98763 | — |
| Reactant | Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1) | HCID 2733084 | — |
| Reactant | (S)-2-amino-3-(4-benzyloxy-phenyl)-N-tert-butyl-propionamide | HCID 15517727 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | (S)-[2-(4-benzyloxy-phenyl)-1-tert-butylcarbamoyl-ethyl]-carbamic acid tert-butyl ester | HCID 15517726 | 92% |
Reaction Steps
The Preparation of (S)-2-Amino-3-(4-benzyloxy-phenyl)-N-tert-butyl-propionamide (Ia) ##STR26## Step i: N-Boc-O-Benzyl-tyrosine (20.0 g, 53.9 mmol) was dissolved in DMF (270 mL) and treated with diisopropylethylamine (19 mL, 108 mmol), tert-butylamine (5.7 mL. 53.9 mmol), and HBTU (13.9 g, 53.9 mmol). The reaction was stirred for 15 minutes and then diluted with EtOAc (1 L), washed with saturated bicarbonate solution (2×1 L) and brine (1 L), dried over Na2SO4 and concentrated to give 22.1 g (92%) of (S)-[2-(4-benzyloxy-phenyl)-1-tert-butylcarbamoyl-ethyl]-carbamic acid tert-butyl ester.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06117841 |
| Source dataset | uspto-grants-2000_09 |
| ORD ID | ord-9d63494014904f20bda0e7f61410eeea |
| Source note | uspto-grants-2000_09 |