反应详情

To a solution of 8.56 g of 2-methyl-1H-naphth[1,2-d]imidazole in 100 ml of tetrahydrofuran was added over a period of 15 minutes 2.25 g of 50% sodium hydride in oil and the mixture allowed to stir for 20 minutes. Methyl iodide (2.93 ml) was added over a 5-minute period and the reaction mixture allowed to stir at room temperature overnight. The reaction mixture was poured into water and the pH adjusted to 2 with 12N hydrochloric acid. The aqueous acid was extracted with chloroform (2×100 ml) and the pH adjusted to 10 with ammonium hydroxide. The aqueous base was extracted with chloroform (2×100 ml) and the combined extracts dried and concentrated to give 7.75 g of the isomers as a tan solid.

1. stirringto stir at room temperature overnight
2. extractionThe aqueous acid was extracted with chloroform (2×100 ml)
3. extractionThe aqueous base was extracted with chloroform (2×100 ml)
4. customthe combined extracts dried
5. concentrationconcentrated
6. customto give 7.75 g of the isomers as a tan solid