Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | (+-)-2-Hydroxyisovaleric acid | HCID 99823 | — |
| 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 | 6-[7-methyl-4-(1-piperazinyl)-1H-quinazolin-2-ylidene]-1-cyclohexa-2,4-dienone | HCID 136134616 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | HCID 136121332 | HCID 136121332 | 70.1% |
Reaction Steps
To a solution of 2-(7-methyl-4-(piperazin-1-yl)quinazolin-2-yl)phenol (250 mg, 0.78 mmol) in CH2Cl2 (6 mL) was added triethylamine (217 μL, 1.56 mmol) followed by the addition of 2-hydroxy-3-methylbutanoic acid (120 mg, 1.0 mmol) and HATU (380 mg, 1.00 mmol). The reaction mixture was stirred at room temperature for 3 h and then quenched with H2O. The aqueous layer was extracted with CH2Cl2, dried over MgSO4, filtered, and concentrated. Purification via silica gel chromatography using 0-10% EtOAc in 50:50 CH2Cl2:hexanes gave 2-hydroxy-1-(4-(2-(2-hydroxyphenyl)-7-methylquinazolin-4-yl)piperazin-1-yl)-3-methylbutan-1-one (230 mg, 70%). LC/MS: m/z 421.3 (M+H)+ at 2.43 min (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)). 1H NMR (400 MHz, DMSO-d6) d 8.45 (m, 1H), 8.01 (d, J=8.5 Hz, 1H), 7.70 (s, 1H), 7.39 (m, 2H), 6.95 (m, 2H), 4.79 (d, J=7.2 Hz, 1H), 4.11 (dd, J=7.0, 5.9 Hz, 1H), 3.87 (m, 8H), 2.52 (s, 3H), 1.91 (m, 1H), 0.88 (dd, J=22.8, 6.7 Hz, 6H) ppm.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US07928107B2 |
|---|
| Source dataset | uspto-grants-2011_04 |
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| ORD ID | ord-2fe8cd7a06764d939259c1df8f6d7c2b |
|---|
| Source note | uspto-grants-2011_04 |
|---|
