Methane → 2H-Purine-2-thione, 6-amino-3,7-dihydro-

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反応手順

6.67 g (16 mmoles) of dithioxanthine and 52 ml of 70% ethylamine in water were heated to 150° C. in a pressure reactor (250 psi) for 12 hours under nitrogen. The solution was treated with charcoal (5%), filtered, and evaporated in vacuo to dryness. The residue was suspended in water, acidified with 1N HCl to pH 4 and neutralized to pH 8 with sodium bicarbonate. The solid was collected, washed and dried to. give 6.66 g (97.4%) of crude thioisoguanine.

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