作者:Tomio Shimizu、Yoshiyuki Hayashi、Takehiro Taniguchi、Kazuhiro Teramura
DOI:10.1016/s0040-4020(01)96450-6
日期:1985.1
N'-dialkyldicarbamoyl, 3(or 4)-methyl-4(or -3)-phenyl(or nitro, ethoxy, phenoxy, phenylthio, pyrrolidinyl, phenylsulfonyl), 3(or 4)-ethyl-4(or -3)phcnyl, and 3(or 4)-ethoxy-4(or -3)-phenylsulfonylruroxan reacted with dipolarophiles in toluene or xylene at the refluxing temperature to give nitrone-type 1,3-dipolar cycloadducts, 5-substituted 1-aza-2,8-dioxabicyclo-[3.3.0]octanes and/or 3-substituted 2-isoxazoline
各种对称或不对称的3,4-二取代呋喃聚糖,例如二氰基,二烷基,二酰基,双(苯磺酰基),N.N'-二烷基二氨基甲酰基,3(或4)-甲基-4(或-3)-苯基(或硝基,乙氧基,苯氧基,苯硫基,吡咯烷基,苯磺酰基),3(或4)-乙基-4(或-3)苯甲酰基和3(或4)-乙氧基-4(或-3)-苯磺酰基芸香烷与双极性亲和剂在甲苯或二甲苯在回流温度下产生硝酮型的1,3-双极性环加合物,5-取代的1-氮杂-2,8-二恶双环-[3.3.0]辛烷和/或3-取代的2-异恶唑啉2-氧化物。另一方面,一些呋喃烷在回流温度下通过在甲苯(或二甲苯)-DMF溶剂中的氧化腈1,3-偶极环加成反应生成2-异恶唑啉。