Palladium-Catalyzed, Atmospheric Pressure Carbonylation of Allylic Halides under the Influence of Sodium Hydroxide or Alkoxides. A Facile Synthesis of β,γ-Unsaturated Acids
作者:Tamon Okano、Nobuyuki Okabe、Jitsuo Kiji
DOI:10.1246/bcsj.65.2589
日期:1992.10
The palladium-catalyzed, atmospheric-pressure carboxylation of allylic halides occurs readily in an aqueous sodium hydroxide/organic solvents two-phase system, giving β,γ-unsaturated acids. Phosphine complexes [PdCl2L2] (I, L = m-(Ph2P)C6H4SO3Na; II, L = Ph3P) or Na2[PdCl4] (III) can be used as the catalyst. Atmospheric-pressure alkoxycarbonylation is realized under the influence of a homogeneous alcoholic
烯丙基卤化物在钯催化下的常压羧化反应在氢氧化钠水溶液/有机溶剂两相体系中很容易发生,得到 β,γ-不饱和酸。膦配合物 [PdCl2L2] (I, L = m-(Ph2P)C6H4SO3Na; II, L = Ph3P) 或 Na2[PdCl4] (III) 可用作催化剂。常压烷氧基羰基化是在均相醇钠醇溶液的影响下实现的。不含膦的钯配合物,如 [(π-烯丙基)PdCl]2 或 III,是首选的催化剂。β,γ-不饱和酯以高产率获得。