반응 #512137

반응 방정식

indole

KO-tBu

4-bromo-2-[4-(2-(R)-methyl-pyrrolidin-1-yl)-but-1-ynyl]-phenylamine

MeI

→

title compound

수율 89.8%

5-Bromo-1-methyl-2-[2-(2-(R)-methyl-pyrrolidin-1-yl)-ethyl]-1H-indole

수율 89.8%

용매

H2O

NMP

NMP

반응 조건

후처리

1. 1
   온도To a cooled
2. 2
   기타the temperature below 5° C
3. 3
   기타was consumed
4. 4
   workup.STIRRINGThe resulting mixture was stirred at room temperature for 2 hours
5. 5
   workup.ADDITIONfollowed by addition of IPAc (400 mL)
6. 6
   workup.STIRRINGThe resulting mixture was stirred for 5 minutes
7. 7
   기타the organic layer was separated
8. 8
   세척The organic layer was washed with 20% brine (3×150 mL)
9. 9
   건조dried over Na2SO4
10. 10
    workup.ADDITIONtreated with activated carbon
11. 11
    여과After filtration
12. 12
    농축the filtrate was concentrated under vacuum

실험 절차

To a cooled (0° C.) suspension of KO-tBu (95%, 6.2 g, 52 mmol) in NMP (120 mL) was added a solution of 4-bromo-2-[4-(2-(R)-methyl-pyrrolidin-1-yl)-but-1-ynyl]-phenylamine (8.0 g, 26 mmol) in NMP (50 mL) dropwise keeping the temperature below 5° C. The resulting mixture was then stirred at room temperature for 3 hours under nitrogen. HPLC indicated that all the starting material was consumed. MeI (1.95 mL, 31.3 mmol) was then added. The resulting mixture was stirred at room temperature for 2 hours. HPLC indicated that all the indole intermediate was methylated. H2O (300 mL) was added slowly to the reaction mixture followed by addition of IPAc (400 mL). The resulting mixture was stirred for 5 minutes and the organic layer was separated. The organic layer was washed with 20% brine (3×150 mL), dried over Na2SO4 and treated with activated carbon. After filtration, the filtrate was concentrated under vacuum to give the title compound as a thick oil (7.5 g), which was used in the next coupling reaction without further purification. 1H NMR (400 MHz, CDCl3) δ 7.78 (d, J=1.8 Hz, 1H), 7.36 (dd, J=1.8, 8.7 Hz, 1H), 7.26 (d, J=8.6 Hz, 1H), 6.37 (s, 1H), 3.81 (s, 1H), 3.40-3.45 (m, 1H), 3.26-3.34 (m, 1H), 3.04-3.16 (m, 2H), 2.51-2.61 (m, 2H), 2.39 (q, J=8.78 Hz, 1H), 2.09-2.14 (m, 1H), 1.87-1.99 (m, 2H), 1.61-1.68 (m, 1H), 1.30 (d, J=6.2 Hz, 3H). 13C NMR (400 MHz, CDCl3) δ 140.30, 135.60, 129.18, 123.08, 121.92, 112.29, 109.95, 98035, 60.16, 54.22, 53.19, 32091, 29.86, 26.85, 22.00, 19.34. [M+H]+ at m/z 322.

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