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US4816587A Process for the preparation of 2-halogenated ergoline derivatives 失效
2-卤代麦角灵衍生物的制备方法

Process for the preparation of 2-halogenated ergoline derivatives
摘要:
The invention relates to a novel process for the halogenation in 2-position of ergot alkaloids. The process is characterized by that as a halogenating agent a system consisting of dimethylsulfoxide, a trialkylhalosilane or triarylhalosilane and optionally a hydrogen halide is used.
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