Optically Active Axially Chiral Anilide and Maleimide Derivatives as New Chiral Reagents: Synthesis and Application to Asymmetric Diels−Alder Reaction
作者:Osamu Kitagawa、Hirotaka Izawa、Kiyonobu Sato、Akira Dobashi、Takeo Taguchi、Motoo Shiro
DOI:10.1021/jo9721711
日期:1998.4.1
New axially chiral N-acryl-N-allyl-o-tert-butylanilide and N-(o-tert-butylphenyl)-2-methylmaleimide with high optical purity and definite absolute configurations were prepared from o-tert-butylaniline and (S)-O-acetyl lactic acid or (R)-2-methylsuccinic acid, respectively. Iodine- or Lewis acid-mediated asymmetric Diels-Alder reaction of these axially chiral compounds with various dienes proceeded
由邻叔丁基苯胺和(S)制备具有高光学纯度和绝对绝对构型的新型轴向手性N-丙烯酸-N-烯丙基-邻叔丁基苯胺和N-(邻叔丁基苯基)-2-甲基马来酰亚胺-O-乙酰乳酸或(R)-2-甲基琥珀酸。这些轴向手性化合物与各种二烯的碘或路易斯酸介导的不对称Diels-Alder反应以较高的内和非对映选择性进行。