Bromine → 1-Bromo-6-[3-(2-cyclopentylethyl)-1-benzofuran-2-yl]-2-naphthol

HRID 1359215Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1359215
[CH:1]1([CH2:6][CH2:7][C:8]2[C:12]3[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=3[O:10][C:9]=2[C:17]2[CH:18]=[C:19]3[C:24](=[CH:25][CH:26]=2)[CH:23]=[C:22]([OH:27])[CH:21]=[CH:20]3)[CH2:5][CH2:4][CH2:3][CH2:2]1.[Br:28]Br.C([O-])(=O)C.[K+]>C(O)(=O)C>[Br:28][C:23]1[C:24]2[C:19](=[CH:18][C:17]([C:9]3[O:10][C:11]4[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=4[C:8]=3[CH2:7][CH2:6][CH:1]3[CH2:5][CH2:4][CH2:3][CH2:2]3)=[CH:26][CH:25]=2)[CH:20]=[CH:21][C:22]=1[OH:27]

Komponenten

5

Versuchsvorschrift

Following the procedure described in Step 4 of Example 1, 6-[3-(2-cyclopentylethyl)-1-benzofuran-2-yl]-2-naphthol (0.671 g, 1.88 mmol) was brominated with bromine (0.11 mL, 2.2 mmol) and potassium acetate (1.91 g, 19.5 mmol) in glacial acetic acid (19 mL). Purification by flash chromatography using 100% hexane and 1-30% chloroform in hexane as eluants afforded 1-bromo-6-[3-(2-cyclopentylethyl)-1-benzofuran-2-yl]-2-naphthol as a light brown semi-solid (0.609 g). 1HNMR (300 MHz, DMSO-d6): δ10.75 (s, 1H), 8.25 (s, 1H), 8.15 (d, 1H, J=8.6 Hz), 7.95-8.0 (m, 2H), 7.7 (d, 1H, J=8.6 Hz), 7.6 (d, 1H, J=8.6 Hz), 7.25-7.4 (m, 3H), 3.0 (t, 2H, J=8.6 Hz), 1.65-1.95 (m, 5H), 1.4-1.65 (m, 4H), and 1.1-1.25 ppm (m, 2H).

Aufarbeitung

  1. customPurification by flash chromatography

Quellen und Nachweise

ORD-Eintrag
ord-778846802daa412a8a0b782b075b84fe
Quelldatensatz
uspto-grants-2003_07
Patentnummer
US06599925B2

Notizen zur Reaktion

Wird geladen…