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Reaction of Grignard Reagents with Diethyl Perfluoroacyl (1-Cyanoethyl)phosphonates. Synthesis of Perfluoroalkylated α,β-Unsaturated Nitriles with Predominant Z-Selectivity
引用本文:沈延昌,江国防. Reaction of Grignard Reagents with Diethyl Perfluoroacyl (1-Cyanoethyl)phosphonates. Synthesis of Perfluoroalkylated α,β-Unsaturated Nitriles with Predominant Z-Selectivity[J]. 中国化学, 2002, 20(11): 1375-1378. DOI: 10.1002/cjoc.20020201137
作者姓名:沈延昌  江国防
作者单位:SHEN,Yan-Chang JIANG,Guo-FangState Key Laboratory of Organometallic Chemistry,Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai 200032,China
基金项目:theNationalNaturalScienceFoundationofChina (No.2 9972 0 46 )andChineseAcademyofSciences
摘    要:IntroductionRecentlymuchattentionhasbeendevotedtothesynthesisofα ,β unsaturatednitrilessincetheyareim portantstructuralfeatureofseveralnaturallyoccurringbi ologicallyactivecompounds .1,2 Theintroductionoffluo rineortrifluoromethylgroupintobiologicallyactiv…

关 键 词:perfluoroalkylated α  β-unsaturated nitrile   Grignard reagent   diethyl (1-cyanoethyl)phosphonate   Z-selectivity

Reaction of Grignard Reagents with Diethyl Perfluoroacyl (1‐Cyanoethyl) phosphonates. Synthesis of Perfluoroalkylated α, β‐Unsaturated Nitriles with Predominant Z‐Selectivity
SHEN,Yan-Chang JIANG,Guo-FangState Key Laboratory of Organometallic Chemistry. Reaction of Grignard Reagents with Diethyl Perfluoroacyl (1‐Cyanoethyl) phosphonates. Synthesis of Perfluoroalkylated α, β‐Unsaturated Nitriles with Predominant Z‐Selectivity[J]. Chinese Journal of Chemistry, 2002, 20(11): 1375-1378. DOI: 10.1002/cjoc.20020201137
Authors:SHEN  Yan-Chang JIANG  Guo-FangState Key Laboratory of Organometallic Chemistry
Affiliation:SHEN,Yan-Chang JIANG,Guo-FangState Key Laboratory of Organometallic Chemistry,Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai 200032,China
Abstract:Diethyl (1‐cyanoethyl) phosphorate 1 was reacted with n‐butyl‐lithium in tetrahydrofuran (THF) at ‐ 78 °C and the resulting carbanion 2 reacted with perfluoroalkanoic add anhydride to afford perfluoroacylated phosphorate 3. Without isolation 3 was attacked by Grignard reagents giving perfluoroalkylated α, β‐unsaturated nitriles in 46%‐88% yields with high Z‐stereoselectivity (Z: E = 89–62:11–38).
Keywords:perfluoroalkylated α  β‐unsaturated nitrile  Grignard reagent  diethyl (l‐cyanoethyl)phosphonate  Z‐selectivity
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