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158984-83-9

158984-83-9 Structure

158984-83-9 Structure
IdentificationBack Directory
[Name]

TERT-BUTYL 6-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE
[CAS]

158984-83-9
[Synonyms]

N-BOC-6-HYDROXY-3,4-DIHYDRO-ISOQUINOLINE
6-hydroxy-2-N-Boc-3,4-dihydroisoquinoline
2-N-Boc-6-Hydroxy-3,4-dihydroisoquinoline
5-hydroxy-3,4-dihydroisoquinoline-2(1H)-carboxylate
tert-Butyl 6-hydroxy-3,4-dihydro-2(1H)-isoquinolinecarboxylate
tert-butyl 6-hydroxy-3,4-dihydro-1H-isoquinoline-2-carboxylate
TERT-BUTYL 6-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE
tert-Butyl 6-hydroxy-1,2,3,4-tetrahydroisoquinoline-2-carboxylate
TERT-BUTYL 6-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE-10
tert-Butyl 6-hydroxy-3,4-dihydroisoquinoline-2(1H)-carboxylate 95+%
6-HYDROXY-3,4-DIHYDRO-1H-ISOQUINOLINE-2-CARBOXYLIC ACID TERT-BUTYL ESTER
3,4-Dihydro-6-hydroxy-2(1H)-isoquinolinecarboxylic acid tert-butyl ester
2(1H)-Isoquinolinecarboxylic acid, 3,4-dihydro-6-hydroxy-, 1,1-dimethylethyl ester
[Molecular Formula]

C14H19NO3
[MDL Number]

MFCD08275034
[MOL File]

158984-83-9.mol
[Molecular Weight]

249.31
Chemical PropertiesBack Directory
[Melting point ]

110-111.5 °C
[Boiling point ]

391.4±42.0 °C(Predicted)
[density ]

1.170±0.06 g/cm3(Predicted)
[storage temp. ]

Sealed in dry,2-8°C
[pka]

9.79±0.20(Predicted)
[Appearance]

White to light brown Solid
Safety DataBack Directory
[Symbol(GHS) ]


GHS07
[Signal word ]

Warning
[Hazard statements ]

H302-H315-H319-H335
[Precautionary statements ]

P261-P305+P351+P338
[HazardClass ]

IRRITANT
[HS Code ]

2933491090
Hazard InformationBack Directory
[Uses]

tert-Butyl 6-hydroxy-3,4-dihydroisoquinoline-2(1H)-carboxylate is a chemical reagent used in the synthesis of androgen receptor modulators.
[Synthesis]

Di-tert-butyl dicarbonate

24424-99-5

1,2,3,4-TETRAHYDRO-ISOQUINOLIN-6-OL HBR

59839-23-5

TERT-BUTYL 6-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE

158984-83-9

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
Spectrum DetailBack Directory
[Spectrum Detail]

TERT-BUTYL 6-HYDROXY-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE(158984-83-9)1HNMR
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