钋
化学
嗜盐菌
维蒂希反应
反应性(心理学)
鏻盐
叶立德
药物化学
有机化学
盐(化学)
细菌
遗传学
生物
医学
替代医学
病理
标识
DOI:10.1016/s0040-4039(01)91362-0
摘要
Phosphonium ylides Ph3PCHR (R = H, CH3, C2H5, n-C3H7, n-C5H11) react readily with perhalofluoroalkanes to afford regiospecifically α-haloalkylphosphonium salts Ph3P+-CHXR Y− (X = I, Br, Cl) in good yields. These reactions reveal a new type of reactivity of phosphonium ylides, i.e., the halophilic attack on CX bonds, and may be useful for the regiospecific synthesis of substituted haloolefins via Wittig reaction.
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