Isopropyl iodide → HCID 69268875, compound

Participants

Reaction Steps

Dissolve 5-[3-(tert-butyldimethylsilyloxy)propoxy]-1H-indole (1.0 g, 0.327 mmol) in N,N-dimethylformamide (20 mL) under nitrogen. Add 3.6 mL potassium tert-butoxide (1M solution in THF, 1.1 equiv) and stir 10 minutes, then add 2-iodopropane (0.36 mL, 1.1 eq) and stir for 30 minutes. Dilute with ethyl acetate and wash with water then brine. Dry over magnesium sulfate, filter and concentrate. Purification by column chromography (hexanes to 4:1 hexanes:ethyl acetate) affords 0.43 g product (38%) as a clear oil. 1H NMR (400 MHz, DMSO-d6) δ 0.00 (s, 6H), 0.83 (s, 9H), 1.40 (d, J=6.83 Hz, 6H), 1.86 (m, 2H), 3.74 (m, 2H), 3.98 (m, 2H), 4.64 (m, 1H), 6.29 (d, J=2.93 Hz, 1H), 6.71 (m, 1H), 6.99 (d, J=1.95 Hz, 1H), 7.36 (m, 2H).

Provenance & Evidence