반응 #802370

반응 방정식

5-(3-bromophenyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

5-methylthiophene-2-boronic acid pinacol ester

K2CO3

→

2,8-dimethyl-5-(3-(5-methylthiophen-2-yl)phenyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

용매

DME water

EtOAc

반응 조건

후처리

1. 1
   농축The reaction mixture was concentrated under reduced pressure
2. 2
   기타The residue obtained
3. 3
   세척washed with water (20 mL)
4. 4
   건조The organic layer was dried over anhydrous sodium sulfate
5. 5
   농축concentrated under reduced pressure
6. 6
   기타to obtain crude, which
7. 7
   기타was purified by reverse phase HPLC

실험 절차

To a de-aerated solution of 5-(3-bromophenyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (100 mg, 0.281 mmol), 5-methylthiophene-2-boronic acid pinacol ester (175 mg, 0.784 mmol) and K2CO3 (162 mg, 1.1 mmol) in DME-water (2:1) was added Pd(PPh3)4 (22 mg, 0.019 mmol). The reaction mixture was stirred at 90° C. for 45 min. The reaction mixture was concentrated under reduced pressure. The residue obtained was dissolved in EtOAc (50 mL) and washed with water (20 mL). The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure to obtain crude, which was purified by reverse phase HPLC to yield 2,8-dimethyl-5-(3-(5-methylthiophen-2-yl)phenyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole. 1H NMR (TFA salt, CD3OD) d (ppm): 7.7 (d, 1H), 7.6 (m, 2H), 7.37 (s, 1H), 7.23 (m, 2H), 7.19 (d, 1H), 7.03 (d, 1H), 6.8 (s, 1H), 4.6 (m, 2H), 3.7 (m, 2H), 3.3 (m, 1H), 3.1-3.2 (m, 4H), 2.5 (s, 3H), 2.42 (s, 3H).

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