The Heck reaction of allylic alcohols catalysed by an N-heterocyclic carbene-Pd(<scp>ii</scp>) complex and toxicity of the ligand precursor for the marine benthic copepod <i>Amphiascoides atopus</i>
作者:Jorge Cárdenas、Ruben Gaviño、Eréndira García-Ríos、Lucero Rios-Ruiz、Ana C. Puello-Cruz、Francisco Neptalí Morales-Serna、Samuel Gómez、Adolfo López-Torres、José Antonio Morales-Serna
DOI:10.1039/d1ra03484g
日期:——
The palladium-catalysed reaction of aryl halides and allylicalcohols is an attractive method for obtaining α,β-unsaturatedaldehydes and ketones, which represent key intermediates in organic synthesis. In this context, a 1,2,3-triazol-5-ylidene (aNHC)-based palladium(II) complex formed in situ has been found to be a selective catalyst for the syntheses of building blocks from the corresponding aryl
芳基卤化物和烯丙醇的钯催化反应是获得 α,β-不饱和醛和酮的一种有吸引力的方法,它们是有机合成中的关键中间体。在这种情况下,已发现原位形成的 1,2,3-三唑-5-亚基 (aNHC) 基钯 ( II )配合物是从相应的芳基卤化物和烯丙基化合物合成结构单元的选择性催化剂醇,产率从 50% 到 90% 不等。钯 ( II ) 配合物的配体前体 (1,2,3-三唑盐) 对harpacticoid 桡足类Amphiascoides atopus缺乏毒性作用使我们能够将催化系统的效率与全球水生生态系统中主要废物化学品的潜在影响进行对比,这在以前没有得到解决。
The Heck Reaction of Allylic Alcohols Catalysed by an Air-Stable Phosphinito Complex of Palladium(II)
of aryl bromides with primary and secondaryallylicalcohols, performed in the presence of an air-stable phosphinito complex of palladium(II), produced the corresponding carbonylcompounds. Reactions with tertiary allylicalcohols under the same conditions generated the aromatic conjugated alcohols. allylicalcohols - Heck reaction - palladium - aldehydes - ketones
Ruthenium(III)-Catalyzed β-Alkylation of Secondary Alcohols with Primary Alcohols
作者:Qingfu Wang、Kaikai Wu、Zhengkun Yu
DOI:10.1021/acs.organomet.6b00130
日期:2016.5.9
A Ru(III)-NNN complex bearing a pyridyl-supported pyrazolyl-imidazolyl ligand was synthesized and utilized as the catalyst for the direct beta-alkylation of secondary alcohols with primary alcohols. beta-Alkylated secondary alcohols were obtained in moderate to high yields with water formed as the byproduct through a hydrogen borrowing pathway. The present protocol provides a concise atom-economical and environmentally benign method for C-C bond formation.
Borsche; Sinn, Justus Liebigs Annalen der Chemie, 1942, vol. 553, p. 260,267