Picolyl chloride hydrochloride → HCID 66842332, compound

Participants

Reaction Steps

—Sodium hydride (60% dispersion in oil, 15.5 g, 319 mmol) was added in portions to a solution of 6-nitroindole (23.5 g, 145 mmol) in 1-methyl-2-pyrrolidinone (1000 ml). After 45 min. stirring, 2-chloromethyl-pyridine hydrochloride (28.2 g, 174 mmol) was added in portions. Stirring was continued for 1 h and the reaction mixture was poured into a saturated aqueous solution of ammonium chloride. The product was extracted into ethyl acetate; the combined organic phases were washed with brine, dried over sodium sulfate and concentrated under reduced pressure. Column chromatography (heptane/ethyl acetate 1:1→ethyl acetate) afforded 6-nitro-1-pyridin-2-ylmethyl-1H-indole (30 g).

Provenance & Evidence