Indole → 1-(6-Chlorohexyl)-1H-indole

Temperature

0 °C

To a mixture of NaH (0.249 g, 10.0 mmol) in DMF (5.00 mL) was added a solution of 1-H-indole (0.585 g, 5.00 mmol) in DMF (2.00 mL) at 0° C. The reaction mixture was stirred for 30 minutes at 0° C. and warmed up to room temperature. To the reaction mixture 1-bromo-6-chlorohexane (0.998 g, 5.00 mmol) was added dropwise via syringe and the reaction mixture was stirred overnight. The reaction mixture was diluted with EtOAc (30 mL), washed with water (3×10 mL), brine (10 mL), dried over MgSO4, concentrated in vacuo and purified by chromatography using hexane:EtOAc (97.5:2.5) to give the desired product (0.900 g, 76.0%): 1H NMR (400 MHz, CDCl3) δ 7.76-7.54 (m, 1H), 7.47-6.96 (m, 4H), 6.60-6.34 (m, 1H), 4.13 (t, 2H, J=6.8 Hz), 3.50 (t, 2H, J=5.6 Hz), 1.98-1.79 (m, 2H), 1.79-1.64 (m, 2H) 1.54-1.17 (m, 4H).

1. temperaturewarmed up to room temperature
2. stirringthe reaction mixture was stirred overnight
3. washwashed with water (3×10 mL), brine (10 mL)
4. dry with materialdried over MgSO4
5. concentrationconcentrated in vacuo
6. custompurified by chromatography

ORD record

ord-19c4fa47f1f646acb70ce6b71f362046

Source dataset

uspto-grants-2004_04

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06727264B1