Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Methylamine | HCID 6329 | — |
| 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 | 2-(4-Chlorophenyl)-5-cyclopropyl-6-nitro-2H-indazole-3-carboxylic acid | HCID 86698998 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | HCID 67776061 | HCID 67776061 | — |
Reaction Steps
To a stirred solution of (vi) (15 g, unpurified from the previous step) in DMF (300 mL) was added DIPEA (27.7 mL, 0.16 mol), HATU (23.9 g, 0.06 mol) and methylamine (2.0M solution in THF, 60 mL, 0.12 mol). The reaction mixture was stirred for 2 h at RT and then poured onto the ice. The precipitate was then separated by filtration and the solid obtained was dissolved in DCM (300 mL), dried (Na2SO4) and the volatiles removed in vacuo to give (vii) (16.5 g with purity 86.5% by HPLC analysis), which was used unpurified in subsequent steps. ESI-MS m/z calculated for [M+H]+: 371.1. found: 371.0. 1H NMR (400 MHz, CDCl3) δ 8.23 (s, 1H), 7.74 (s, 1H), 7.62-7.45 (m, 4H), 5.91 (brs, 1H), 3.09-2.97 (m, 3H), 2.40-2.28 (m, 1H), 1.04-0.95 (m, 2H), 0.73-0.65 (m, 2H).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US09447080B2 |
|---|
| Source dataset | uspto-grants-2016_09 |
|---|
| ORD ID | ord-3141c6032d3c429d88ccaa625ecc4b61 |
|---|
| Source note | uspto-grants-2016_09 |
|---|
