Synthesis of a Novel α-Diimine Palladium(II) Complex Bearing an η3-Allyl γ-Lactone Ligand, a Key Intermediate in Alkyne Cyclocarbonylation Processes
Synthesis of a Novel α-Diimine Palladium(II) Complex Bearing an η3-Allyl γ-Lactone Ligand, a Key Intermediate in Alkyne Cyclocarbonylation Processes
复制标题
带有 η3-烯丙基 γ-内酯配体的新型 α-二胺钯 (II) 配合物的合成，这是炔烃环羰基化过程中的关键中间体
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
A. Guerri
中科院分区：
文献类型：
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作者：
Carla Carfagna;G. Gatti;L. Mosca;P. Paoli;A. Guerri
研究了 [Pd(CH3)(CO)(PriDAB)]+[B{3,5-(CF3)2C6H3}4]- (1)（其中 PriDAB = 1,4-二异丙基-1,4-二氮杂-1,3-丁二烯）对炔烃和一氧化碳的反应性。虽然 1 与苯乙炔反应产生有规立构均聚物，但按化学计量将 1-苯基-1-丙炔和 2-丁炔插入 Pd-酰基键中产生环钯 2 和 3；随后与 CO 的反应形成了新型配合物 4 和 5，这是炔烃环羰基化过程中关键中间体的第一个实验证据。
Reactivity of [Pd(CH3)(CO)(PriDAB)]+[B{3,5-(CF3)2C6H3}4]- (1), where PriDAB = 1,4-diisopropyl-1,4-diaza-1,3-butadiene, toward alkynes and carbon monoxide was investigated. While the reaction of 1 with phenylacetylene produced stereoregular homopolymer, a stoichiometric insertion of 1-phenyl-1-propyne and 2-butyne into the Pd−acyl bond yielded the palladacycles 2 and 3; subsequent reaction with CO resulted in the formation of novel complexes 4 and 5, which represent the first experimental evidence of a key intermediate in alkyne cyclocarbonylation processes.