반응 #1807

반응 방정식

product

2,8-Dimethoxy-5-[4-[2-(1-piperidinyl)ethoxy]phenyl]-6H-benzo[c]phenanthridine

ethanethiol

aluminum chloride

→

title compound

수율 60.5%

2,8-Dihydroxy-5-[4-[2-(1-piperidinyl)ethoxy]phenyl]-6H-benzo[c]phenanthridine

수율 60.5%

용매

methylene chloride

반응 조건

후처리

1. 1
   기타the mixture was quenched carefully with THF (25 mL) and saturated sodium bicarbonate (25 mL)
2. 2
   기타The layers were separated
3. 3
   추출the aqueous layer was extracted with THF (25 mL)
4. 4
   건조the combined organic layers were dried (sodium sulfate)
5. 5
   농축concentrated
6. 6
   기타The residue was purified by radial chromatography (silica gel, 1:1 hexane

실험 절차

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.

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