Methyl iodide → HCID 44592056, compound

Participants

Reaction Conditions

Reaction Steps

Naltrexone (1, 30 mg, 0.062 mmol) dissolved in 5 mL of dry acetone was added to iodomethane (0.04 mL, 0.62 mmol) in a reaction tube. The reaction tube was sealed and heated at 70° C. for four days. A white precipitate formed over the course of reaction. At the end of the reaction, the mixture was cooled and filtered and the precipitate was washed with cold acetone. The white precipitate was crystallized from methanol-ether to obtain the desired product 2 as a crystalline salt in 41% yield: mp 215-216° C. 1H NMR (DMSO-d6, 500 MHz) δ 9.52 (s, 1H) 6.67 (s, 2H), 6.35 (s, 1H), 4.90 (s, 1H), 4.02 (s, 1H), 3.91 (m, 2H), 3.62 (s, 3H), 3.52 (d, J=19.5 Hz, 1H), 3.05 (m, 1H), 2.92 (m, 2H), 2.76 (m, 2H), 2.10 (m, 1H), 1.97 (m, 1H), 1.59 (m, 2H), 1.22 (m, 1H), 0.77 (m, 1H), 0.70 (m, 1H), 0.61 (m, 1H), 0.37 (m, 1H). MS m/z 356 [(M−I−)+]. Anal. Calcd for C21H26IN4.0.75H2O: C, 50.77; H, 5.58; N, 2.82. Found C, 50.49; H, 5.70; N, 2.71.

Provenance & Evidence