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摘要:
The formal [5+2] cycloaddition of vinyloxiranes with oxazol-5-(4H)-ones proceeds readily at room temperature in THF in the presence of Pd-2(dba)(3)center dot CHCl3, dppp, and K2CO3, thus furnishing the desired seven-membered lactones in 67-96 % yield. The chemical structure of the title compounds was confirmed by X-ray diffraction analysis.
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来源 :
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
ISSN: 1434-193X
年份: 2020
期: 34
卷: 2020
页码: 5557-5562
2 . 8 0 0
JCR@2022
ESI学科: CHEMISTRY;
ESI高被引阀值:139
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