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Synthesis of Oxazolidin-2-ones by Oxidative Coupling of Isonitriles, Phenyl Vinyl Selenone, and Water

机译:异腈,苯基乙烯基硒酮和水的氧化偶联合成恶唑烷-2-酮

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摘要

Reaction of alkyl isocyanides, phenyl vinyl selenone, and water in the presence of a catalytic amount of Cs2CO3 afforded oxazolidin-2-ones in good yields. This unprecedented heteroannulation process created four chemical bonds in a single operation with the isocyano group acting formally as a polarized double bond and phenyl vinyl selenone as a latent 1,3-dipole. The phenylselenonyl group played a triple role as an electron-withdrawing group to activate the 1,4-addition, a leaving group, and a latent oxidant in this transformation.
机译:在催化量的Cs 2 CO 3存在下,烷基异氰化物,苯基乙烯基硒酮和水的反应以良好的产率提供了恶唑烷-2-酮。这种前所未有的异环过程在一次操作中产生了四个化学键,其中异氰基以正式形式作用为极化双键,苯基乙烯基硒酮作为潜在的1,3-偶极子。在该转变中,苯基硒壬基作为吸电子基团起三重作用,以激活1,4-加成,离去基团和潜在的氧化剂。

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