A Facile Synthesis of Novel and Stable Phosphorus Ylides Containing 2-Aryl-1,3-Dioxane-4,6-Dione
作者: Azizollah HabibiHedyeh HosseinzadehSeyed Majid Aghvami
作者单位: 1Faculty of Chemistry , Tarbiat Moallem University , Tehran , Iran
刊名: Phosphorus, Sulfur, and Silicon and the Related Elements, 2012, Vol.187 (3), pp.409-420
来源数据库: Taylor & Francis Journal
DOI: 10.1080/10426507.2011.621001
关键词: Triphenylphosphinerotamersstable phosphorus ylidesmeldrum's acid
原始语种摘要: Abstract(#br)The reaction between dialkyl acetylene dicarboxylate and 2-aryl-1,3-dioxane-4,6-dione derivatives in the presence of triphenylphosphine in ethyl acetate led to stable phosphorus ylides in good yields. These stabilized phosphorus ylides exist as a mixture of two geometrical isomers as a result of restricted rotation around the carbon–carbon partial double bond. The 1H NMR variable temperature spectra for 3c(#br) are studied and the results are reported.
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