Reformatsky Reaction on α-OxoketeneS,S-Acetals: Synthesis of Novel Polarized VinylketeneS,S-Acetals and Dimethyl 2-Aryl(methyl)-propene-1,3-dicarboxylates
Synthesis of 6<i>H</i>-Dibenzo[<i>b</i>,<i>d</i>]pyran-6-ones Using the Inverse Electron Demand Diels–Alder Reaction
作者:Ian R. Pottie、Penchal Reddy Nandaluru、Wendy L. Benoit、David O. Miller、Louise N. Dawe、Graham J. Bodwell
DOI:10.1021/jo201775e
日期:2011.11.4
These dienes reacted with the enamine derived from cyclopentanone and pyrrolidine to afford the corresponding cyclopenteno-fused 6H-dibenzo[b,d]pyran-6-ones, most likely via a domino inverseelectrondemandDiels–Alder (IEDDA)/elimination/transfer hydrogenation sequence. The parent diene (EWG = CO2Me, no substituents) was reacted with a range of electron-rich dienophiles (mostly enamines) to afford
合成了一组香豆素稠合的缺电子的1,3-二烯,它们在二烯单元末端的吸电子基团(EWG)的性质不同(当EWG = CO 2 Me时),其性质和取代基的位置。这些二烯与衍生自环戊酮和吡咯烷的烯胺反应,生成相应的环戊烯稠合的6 H-二苯并[ b,d ]吡喃-6-酮,很可能是通过多米诺逆电子需求Diels-Alder(IEDDA)/消除/转移加氢顺序。使母体二烯(EWG = CO 2 Me,无取代基)与一系列富电子的亲二烯体(主要是烯胺)反应,得到相应的6 H-二苯并[ b],d ] pyran-6-ones或它们的未脱氢前体,用合适的氧化剂处理后会被芳香化。烯胺可以在反应之前合成或就地产生。报道了30种二苯并吡喃酮的合成。
Condensation of Dimethyl-3-methylglutaconate with α-Aminoaldehydes: A Straightforward Synthesis of New 2-Substituted Statines
作者:Nathalie Piveteau、Patrick Audin、Joëlle Paris
DOI:10.1055/s-1997-1008
日期:1997.11
Dimethyl-3-methylglutaconate reacts with chiral α-aminoaldehydes under basic conditions to afford 2-substituted γ-amino-β-hydroxyesters (statine derivatives). The anti derivatives were obtained in a diastereoselective manner.
One-Pot Preparation of 3,5-Hexadienoic Acid Compounds from Phenylacetaldehyde Derivatives
作者:Georgios Motsios、Mohammed Ahmar、Abdel-Ilah Nadi、Joelle Paris
DOI:10.1080/00397919108019763
日期:1991.3
Abstract The synthesis of 6-aryl-4-methoxycarbonyl-3-methyl-3,5-hexadienoic acids by condensation of dimethyl-3-methyl glutaconate and phenylacetaldehyde derivatives in a stereoselective process is described.