反应详情

A mixture of 5,6,6-trimethyl-1,2,3,6-tetrahydropyrrolo[3,2,1-ij]quinolinium acetate (1.35 g, 6.29 mmol) and malonaldehyde bis(phenylimine)monohydrochloride (1.63 g, 6.29 mmol) in 10 mL acetic anhydride and 10 mL acetic acid were refluxed for 2 hours. The reaction mixture was then cooled to room temperature at which point the volatiles were removed under reduced pressure. The resulting oil was diluted with CH2Cl2, washed with 2M HCl (aqueous), dried over Na2SO4 and concreted to give a brown solid that was combined with 6-(6-hydroxyhexyl)-5,6-dimethyl-1,2,3,6-tetrahydropyrrolo[3,2,1-ij]quinolinium chloride (1.84 g, 5.73 mmol) in 20 mL acetic anhydride. To this stirring solution was added 5 mL triethylamine. The reaction was heated to 90° C. for 1 hour and then cooled to room temperature. The volatiles were concentrated under reduced pressure to give a dark oil. This oil was refluxed for 3 hours in 70 mL ACN and 70 mL 1 M HCl. The reaction mixture was concentrated to 50 mL and extracted with CH2Cl2. The separated organic phase was dried over Na2SO4 and concentrated to give a blue solid that was purified by silica gel flash chromatography affording the product (2.14 g, 73.7%) as a black solid. 1H-NMR (300 MHz, d6DMSO): δ 8.34 (m, 2H), 7.15 (m, 6H), 6.48 (t, 2H), 6.61 (m, 2H), 4.00 (s, 4H), 3.32 (m, 9H), 2.81 (s, 4H), 2.10 (m, 4H), 1.67 (s, 9H), 1.11 (m, 4H) ppm; MS m/z calculated for C36H45N2O2 (M+): 521.4. Found 521.5 (M+, ESI+).

1. temperaturewere refluxed for 2 hours
2. customwere removed under reduced pressure
3. additionThe resulting oil was diluted with CH2Cl2
4. washwashed with 2M HCl (aqueous)
5. dry with materialdried over Na2SO4
6. customto give a brown solid that
7. temperatureThe reaction was heated to 90° C. for 1 hour
8. temperaturecooled to room temperature
9. concentrationThe volatiles were concentrated under reduced pressure
10. customto give a dark oil
11. concentrationThe reaction mixture was concentrated to 50 mL
12. extractionextracted with CH2Cl2
13. dry with materialThe separated organic phase was dried over Na2SO4
14. concentrationconcentrated
15. customto give a blue solid that
16. customwas purified by silica gel flash chromatography