HuagongsheHuagongshe Chemistry Print Report · For research reference only
Diisopropylethylamine → 5-(2-Ethoxycarbonyl-indan-2-ylcarbamoyl)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| 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 | Ethyl 2-amino-2,3-dihydro-1H-indene-2-carboxylate | HCID 10921653 | — |
| Reactant | 2-BOC-1,2,3,4-Tetrahydroisoquinoline-5-carboxylic acid | HCID 22185293 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | 5-(2-Ethoxycarbonyl-indan-2-ylcarbamoyl)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester | HCID 59314314 | 30.5% |
Reaction Steps
To a solution of 3,4-dihydro-1H-isoquinoline-2,5-dicarboxylic acid 2-tert-butyl ester (2 g, 7.2 mmol), 2-amino-indan-2-carboxylic acid ethyl ester (1.5 g, 7.2 mmol), HATU (3.27 g, 8.6 mmol) in anhydrous DMF (20 mL) is added DIPEA (1.42 mL, 8.6 mmol). The resulting solution is stirred at RT overnight. After the removal of DMF in vacuo, the residue is dissolved in EtOAc (150 mL) and washed with water (1×20 mL) and brine (2×20 mL). The organic layer is dried over anhydrous Na2SO4 and concentrated in vacuo. The residue is purified by HPLC to give a pure product (71) as white solid (1.02 g, 30%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08569535B2 |
| Source dataset | uspto-grants-2013_10 |
| ORD ID | ord-3bb3d161f6da4a2192dadcea6a0a0737 |
| Source note | uspto-grants-2013_10 |