Methyl iodide → 3-methylthio-11H-s-triazolo[3,4-b][3]benzazepine

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Reaction Steps

To 3 ml of methanol was added 0.215 g of 2,11-dihydro-3H-s-triazolo[3,4-b][3]benzazepine-3-thione and, under stirring, 0.6 ml of 2N-sodium methoxide/methanol was added. Then, 0.07 ml of methyl iodide was added dropwise. After 20 minutes, the reaction mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with water and dried over Na2SO4. The solvent was then evaporated off and the residue was treated with ether. In this manner, 3-methylthio-11H-s-triazolo[3,4-b][3]benzazepine were obtained as crystals. Recrystallization from methanol yielded colorless needles melting at 168°-169° C. This was identical with the products obtained in Examples 1 and 2.

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