Reaktion #1807
ord-3b73803622b24e07932df49f9cb1154a
Reaktionsgleichung
Edukte
Reagenzien
Lösungsmittel
Reaktionsbedingungen
Aufarbeitung
- 1Sonstigethe mixture was quenched carefully with THF (25 mL) and saturated sodium bicarbonate (25 mL)
- 2SonstigeThe layers were separated
- 3Extraktionthe aqueous layer was extracted with THF (25 mL)
- 4Trocknenthe combined organic layers were dried (sodium sulfate)
- 5Einengenconcentrated
- 6SonstigeThe residue was purified by radial chromatography (silica gel, 1:1 hexane
Vorschrift
A solution of the product of Example 13 (195 mg, 0.39 mmol) in methylene chloride (25 mL) was treated with ethanethiol (200 mg, 220 mL, 3.2 mmol) and aluminum chloride (320 mg, 2.4 mmol). After stirring for 4 h at ambient temperature, the mixture was quenched carefully with THF (25 mL) and saturated sodium bicarbonate (25 mL). The layers were separated, the aqueous layer was extracted with THF (25 mL), and the combined organic layers were dried (sodium sulfate) and concentrated. The residue was purified by radial chromatography (silica gel, 1:1 hexane:ethyl acetate, 10-20% methanol, under an ammonia atmosphere) to provide 110 mg (60%) of the title compound as a tan foam. An analytical sample was crystallized from methanol as a light red solid: 1H NMR (300 MHz, dimethylformamide-d7) d 9.92 (br s, 1H), 9.74 (br s, 1H), 7.99 (d, J=8.8 Hz, 1H), 7.78 (d, J=8.5 Hz, 1H), 7.69 (d, J=9.0 Hz, 1H), 7.63 (d, J=8.7 Hz, 1H), 7.23 (d, J=2.0 Hz, 1H), 6.98 (dd, J=9.0, 2.1 Hz, 1H), 6.84 (dd, J=8.4, 2.1 Hz, 1H), 6.73 (m, 5H), 3.92 (t, J=5.9 Hz, 2H), 2.57 (t, J=5.9 Hz, 2H), 2.38 (m, 4H), 1.4-1.5 (m, 4H), 1.3-1.4 (m, 2H); IR (KBr) 3560, 3490 cm-1 ; MS (FD+) m/e 466 (M+); Anal. calc'd. for C30 H30N2O3.0.5H2O: C, 75.75; H, 6.58; N, 5.89. Found: C, 75.82; H, 6.76; N, 5.95.