Preparation, Properties, and Chemical Reactivity of α-Nitrosulfoximines, Chiral Analogues of α-Nitrosulfones
作者:Peter A. Wade、Hung Le、Nayan V. Amin
DOI:10.1021/jo010924k
日期:2002.5.1
Racemic N-methyl-S-(nitromethyl)-S-phenylsulfoximine (2) was prepared in 87% yield via alkaline nitration of N,S-dimethyl-S-phenylsulfoximine. Optically active N-methyl-S-(nitromethyl)-S-phenylsulfoximine (both enantiomers) was prepared in similar fashion. Reaction of racemic 2 with p-chlorophenyl isocyanate and a catalytic quantity of triethylamine in the presence of furan afforded dihydrofuroisoxazole
Synthesis of amino sugars via isoxazolines the concept and one application: nitrile oxide/furan adducts
作者:Ingrid Müller、Volker Jäger
DOI:10.1016/s0040-4039(00)85711-1
日期:1982.1
Synthesis of amino sugars via isoxazolines
作者:Volker Jäger、Ingrid Müller
DOI:10.1016/s0040-4020(01)96705-5
日期:1985.1
cycloadditions to reluctant dipolarophiles furan and 2-methylfuran are presented. The furoisoxazoline adducts 6 and 7 are shown to represent highly advanced, yet versatile precursors for derivatives of novel C6 and C7 amino sugar derivatives, accessible by subsequent highly stereoselective modification (addition of HO/OCH3 or HO/OH) and/or LiAlH4 reduction.
提出了新的1,3-偶极一氧化氮环化成难于吸附的偶极亲和性呋喃和2-甲基呋喃的新形式。呋喃并恶唑啉加合物6和7已显示出代表新型C 6和C 7氨基糖衍生物衍生物的高度先进而通用的前体,可通过随后的高度立体选择性修饰(添加HO / OCH 3或HO / OH)和/或LiAlH 4还原。