Methyl iodide → 3-{1-[2-(1-benzothiophene-3-yl)ethyl]-1,2,3,6-tetrahydro-4-pyridinyl}-1-methyl-1H-indole

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Reaction Steps

3-{1-[2-(1-benzothiophene-3-yl)ethyl]-1,2,3,6-tetrahydro-4-pyridinyl}-1H-indole (358 mg, 1 mmol) (obtained from example 29, step 2) in dry THF (50 ml) was slowly added to a stirred suspension of hexane and washed with 60% sodium hydride (44 mg) at 0° C. After the addition, the reaction mixture was stirred for 30 min and methyl iodide (213 mg, 1.5 mmol) was added. The reaction mixture was stirred for 4 hrs and quenched carefully with ice cold water. The reaction mixture was extracted with chloroform; washed well with water; dried over anhydrous MgSO4; filtered and concentrated. The residue obtained was purified by silica-gel column chromatography by eluting it with 50% ethyl acetate:hexane. Light green semi-solid. Yield: 98 mg (26%); 373 (M+H); 1HNMR (400 MHz, CDCl3): 8.08˜7.82 (m, 3H); 7.40˜6.90 (m, 7H); 6.21˜6.19 (s, 1H); 3.80 (s, 3H); 3.48˜2.60 (m, 10H).

Provenance & Evidence