[2+2+2] cycloaddition reactions of α,β -unsaturated N -arylaldimines, acetylenedicarboxylates and 2-arylidene-1,3-indanediones
作者:Wen-Juan Yang、Jing Zhang、Jing Sun、Ya-Jing Xie、Chao-Guo Yan
DOI:10.1016/j.tet.2017.05.019
日期:2017.6
The domino [2+2+2] cycloadditionreaction of α,β-unsaturated N-arylaldimines, dialkyl acetylenedicarboxylates and 2-arylidene-1,3-indanediones in dry methylene dichloride at room temperature afforded isomeric 2′-styryl-1,2′,3,4′-tetrahydro-1′H-spiro[indene-2,3′-pyridines] in good yields. Under similar conditions, the reaction of α,β-unsaturated N-arylaldimines with two molecules of dialkyl acetylenedicarboxylates
Catalyst-controlled cascade synthesis of bridged bicyclic tetrahydrobenz[<i>b</i>]azepine-4-ones
作者:Michelle A. Kroc、Maciej Markiewicz、Wiktoria H. Pace、Donald J. Wink、Laura L. Anderson
DOI:10.1039/c8cc10313e
日期:——
A catalyst-controlled cascade reaction has been developed for the synthesis of bridged bicyclic tetrahydrobenz[b]azepin-4-ones from N-arylnitrones and allenes. This method expands the accessible structural diversity of a synthetically challenging heterocyclic scaffold and tunes a catalyst-sensitive process in a new direction.
已经开发了由催化剂控制的级联反应,用于从N-芳基亚硝基和丙二烯合成桥联的双环四氢苯并[ b ]氮杂环庚烷-4-酮。这种方法扩展了具有挑战性的合成杂环支架的可利用的结构多样性,并朝着新的方向调整了对催化剂敏感的过程。