6-chloropurine methanesulfonate 在
ice water 作用下,
以
水 为溶剂,
反应 1.25h,
以to give 2.6 g (84% yield) of 6-chloropurine, λ max (H2O)=265 nm, ε=9.22×103的产率得到6-氯嘌呤
There is described a novel method for preparing and isolating novel salts of 6-chloropurine and strong acids. According to the method hypoxanthine is reacted with phosphorus oxychloride in the presence of an organic base to form 6-chloropurine, a solvent is added to the reaction mixture and the latter is reacted with a strong acid to form a 6-chloropurine salt which is then isolated. In a preferred embodiment 6-chloropurine is freed from the salt with water, preferably in the presence of a base. In another preferred embodiment the 6-chloropurine is aminated with various amines.