2-Isoxazolines were synthesized efficiently from a formal [4+1] cycloaddition of nitrosoalkenes and sulfur ylides, which were generated in situ from α-haloketone oximes and dimethyl sulfonium salts. This approach provides a new method to synthesize a range of 2-isoxazolines in high yields and high regioselectivity.

中文翻译：

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由α-卤代肟和二甲基sulf盐有效合成2-异恶唑啉

2-异恶唑啉是由亚硝基烯烃和硫化物的正式[4 + 1]环加成反应有效合成的，亚硝基烯烃和硫化物是由α-卤代肟和二甲基sulf盐就地生成的。该方法提供了一种高产率和高区域选择性合成一系列2-异恶唑啉的新方法。