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| | TERT-BUTYL 6-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE Basic information |
| Product Name: | TERT-BUTYL 6-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE | | Synonyms: | TERT-BUTYL 6-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE;6-HYDROXY-3,4-DIHYDRO-1H-ISOQUINOLINE-2-CARBOXYLIC ACID TERT-BUTYL ESTER;5-hydroxy-3,4-dihydroisoquinoline-2(1H)-carboxylate;N-BOC-6-HYDROXY-3,4-DIHYDRO-ISOQUINOLINE;6-hydroxy-2-N-Boc-3,4-dihydroisoquinoline;tert-Butyl 6-hydroxy-1,2,3,4-tetrahydroisoquinoline-2-carboxylate;tert-butyl 6-hydroxy-3,4-dihydro-1H-isoquinoline-2-carboxylate;tert-Butyl 6-hydroxy-3,4-dihydroisoquinoline-2(1H)-carboxylate 95+% | | CAS: | 158984-83-9 | | MF: | C14H19NO3 | | MW: | 249.31 | | EINECS: | | | Product Categories: | | | Mol File: | 158984-83-9.mol |  |
| | TERT-BUTYL 6-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE Chemical Properties |
| Melting point | 110-111.5 °C | | Boiling point | 391.4±42.0 °C(Predicted) | | density | 1.170±0.06 g/cm3(Predicted) | | storage temp. | 2-8°C | | pka | 9.79±0.20(Predicted) | | Appearance | White to light brown Solid |
| HazardClass | IRRITANT | | HS Code | 2933491090 |
| | TERT-BUTYL 6-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE Usage And Synthesis |
| Uses | tert-Butyl 6-hydroxy-3,4-dihydroisoquinoline-2(1H)-carboxylate is a chemical reagent used in the synthesis of androgen receptor modulators. | | Synthesis | The general procedure for the synthesis of N-BOC-6-hydroxy-3,4-dihydroisoquinolines from di-tert-butyl dicarbonate and 1,2,3,4-tetrahydroisoquinolin-6-ol hydrobromide was as follows: 1,2,3,4-tetrahydroisoquinolin-6-ol hydrobromide (1.54 g, 6.4 mmol) was suspended in water, and a solution of tetrahydrofuran was slowly added dropwise with triethylamine (1.42 mg, 14.0 mmol ) and di-tert-butyl dicarbonate (1.67 mg, 7.6 mmol) to a tetrahydrofuran solution. The reaction mixture was stirred at room temperature overnight. Subsequently, the reaction solution was concentrated and the residue was dissolved in ethyl acetate, washed with water and dried over anhydrous sodium sulfate. After removal of the solvent by evaporation under reduced pressure, the residue was purified by fast column chromatography (ethyl acetate: hexane = 1:5) to afford N-BOC-6-hydroxy-3,4-dihydroisoquinoline as a viscous yellow oil (1.58 g, 99%). The product was characterized by 1H NMR (300 MHz, CDCl3) and ESI-MS: 1H NMR (300 MHz, CDCl3) δ 6.92 (s, 1H), 6.71 (s, 1H), 6.70 (s, 1H), 6.31 (s, 1H), 4.48 (s, 2H), 3.60 (t, J=5.7Hz, 2H), 2.75 (t, J=5.7Hz, 2H), 1.49 (s, 9H); ESI-MS m/z 248 (MH-). | | References | [1] Bioorganic and Medicinal Chemistry, 2016, vol. 24, # 4, p. 789 - 801
[2] Journal of Medicinal Chemistry, 2005, vol. 48, # 10, p. 3586 - 3604
[3] Patent: WO2010/127212, 2010, A1. Location in patent: Page/Page column 31
[4] Journal of Medicinal Chemistry, 2013, vol. 56, # 8, p. 3414 - 3418
[5] Synthetic Communications, 1995, vol. 25, # 20, p. 3255 - 3261 |
| | TERT-BUTYL 6-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE Preparation Products And Raw materials |
| Raw materials | TERT-BUTYL 7-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE-->1,2,3,4-TETRAHYDRO-ISOQUINOLIN-6-OL HBR-->6-METHOXY-3,4-DIHYDRO-2H-ISOQUINOLIN-1-ONE-->1,2,3,4-Tetrahydro-isoquinolin-6-ol Hydrochloride-->1,2,3,4-TETRAHYDRO-ISOQUINOLIN-6-OL-->Piperidine-->Di-tert-butyl dicarbonate-->Triethylamine-->Tetrahydrofuran-->Water |
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