Reactions of 1,3-Diaryl-2-chloropropane-1,3-diones with Nucleophiles− Cyanide-Induced Retro-Claisen−Claisen Condensation
作者:Galina I. Roshchupkina、Yury V. Gatilov、Tatyana V. Rybalova、Vladimir A. Reznikov
DOI:10.1002/ejoc.200300739
日期:2004.4
diaroylmethanes undergo retro-Claisen−Claisen condensation reactions in the course of the reaction with cyanide. Dibenzoylchloromethane reacts with azide and cyanide ions with fragmentation of the molecule and subsequent reassembly, resulting in benzoylated benzaldehyde cyanohydrin and a 1,3-oxathiol derivative, respectively. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
用亲核试剂处理一些 1,3-二芳基-2-氯丙烷-1,3-二酮、无环氯取代烯胺酮和 β-氧代酯很容易进行,至少在第一阶段,形成正式的亲核试剂。替代产品。用叠氮化物和氰化物离子处理烯胺酮和 β-氧代酯会保持骨架,而氯代二芳基甲烷在与氰化物反应的过程中发生逆克莱森-克莱森缩合反应。二苯甲酰氯甲烷与叠氮化物和氰化物离子反应,分子分裂并随后重新组装,分别产生苯甲酰化苯甲醛氰醇和 1,3-氧杂硫醇衍生物。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)