HuagongsheHuagongshe Chemistry Print Report · For research reference only
Diisopropylethylamine → methyl N-(tert-butoxycarbonyl)-3-(tetrahydro-2H-pyran-4-yl)-L-alanylglycinate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | Glycine methyl ester hydrochloride | HCID 122755 | — |
| Reactant | (S)-2-((t-Butoxycarbonyl)amino)-3-(tetrahydro-2H-pyran-4-yl)propanoic acid | HCID 7168106 | — |
| Reactant | Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1) | HCID 9886157 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | methyl N-(tert-butoxycarbonyl)-3-(tetrahydro-2H-pyran-4-yl)-L-alanylglycinate | HCID 66582350 | 76.5% |
Reaction Steps
A 100-mL round-bottomed flask was charged with N-(tert-butoxycarbonyl)-3-(tetrahydro-2H-pyran-4-yl)-L-alanine (3.11 g, 11.38 mmol), HATU (5.41 g, 14.22 mmol), glycine methyl ester hydrochloride (1.714 g, 13.65 mmol, Sigma-Aldrich, St. Louis, Mo.), and 10 mL of DMF. To this was added Hünig's base (4.37 mL, 25.03 mmol). After 30 min at room temperature, the mixture was diluted with water (100 mL) and extracted with EtOAc (2×200 mL). The layers were separated and the organic extracts were washed with water (2×100 mL) and brine (50 mL), dried (MgSO4), filtered and concentrated to give methyl N-(tert-butoxycarbonyl)-3-(tetrahydro-2H-pyran-4-yl)-L-alanylglycinate (3.00 g) as a yellow oil.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08431563B2 |
| Source dataset | uspto-grants-2013_04 |
| ORD ID | ord-e5f7c2c0182f4757a78030fdb6ec1c2c |
| Source note | uspto-grants-2013_04 |