Synthesis of 5‐Fluoro‐ and 5‐Bromoalkylisoxazoles via Nitrosation of 1,1‐Dihalocyclopropanes with Sulfur Trioxide Activated Nitrosyl Chloride.
ChemInform(2016)
摘要
Abstract A method for the synthesis of 5-fluoro- and 5-bromoalkylisoxazoles via nitrosation of alkylated gem -dihalocyclopropanes with a nitrosyl chloride sulfur trioxide adduct has been developed. In the case of bromofluorocyclopropanes the reaction proceeded with excellent chemoselectivity thus providing exclusively 5-fluoroisoxazoles.
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关键词
synthesis,sulfur trioxide
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