Sythesis of 2,5-Dihydro-1,2,4-oxadiazoles through Formal [3+2] Cycloaddition of Oxazoles with Nitrosobenzene Derivatives

Hiroyuki Suga; Xiaolan Shi; Toshikazu Ibata

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Sythesis of 2,5-Dihydro-1,2,4-oxadiazoles through Formal [3+2] Cycloaddition of Oxazoles with Nitrosobenzene Derivatives

机译：恶唑与硝基苯衍生物的正式[3 + 2]环加成反应合成2,5-二氢-1,2,4-恶二唑

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The reactions of substituted oxazoles with nitrosobenzene gave 2-phenyl-2,5-dihydro-1,2,4-oxadiazoles regioselectively through formal [3+2] cycloadditions proceeding via a ringopening of oxazoles by an attack of nitrosobenzene. The reactions with 1-chloro- and 1-methyl-4-nitrosobenzenes also produced the corresponding 2,5-dihydro-1,2,4-oxadiazoles regioselectivity.

机译：取代的恶唑与亚硝基苯的反应通过正式的[3 + 2]环加成反应，通过对亚硝基苯的攻击使恶唑开环进行，从而区域选择性地生成2-苯基-2,5-二氢-1,2,4-恶二唑。与1-氯-和1-甲基-4-亚硝基苯的反应也产生相应的2,5-二氢-1,2,4-恶二唑区域选择性。

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《Bulletin of the Chemical Society of Japan》 |1998年第5期|共6页
作者
Hiroyuki Suga; Xiaolan Shi; Toshikazu Ibata;
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中图分类化学;化学工业;
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机译：恶唑与硝基苯衍生物的正式[3 + 2]环加成反应合成2,5-二氢-1,2,4-恶二唑
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机译：肼 - 腙及其相应的3-乙酰基-2,5-二取代的2,3-二氢-1,3,4-恶二唑对埃及伊蚊的叮咬威慑和杀虫活性

Sythesis of 2,5-Dihydro-1,2,4-oxadiazoles through Formal [3+2] Cycloaddition of Oxazoles with Nitrosobenzene Derivatives

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