allylation using allylicalcohol is an environmentally‐friendly method because of water being the sole byproduct in such reactions, allylicalcohol is one of the most difficult allylating agents in Pd‐catalyzed allylation of nucleophiles. In this study, we successfully developed a mesoporous silica‐supported Pd complex as an efficient catalyst for the allylation of nucleophiles using allylicalcohols as allylating
The C−C bond formation between active methylene compounds and allylic alcohols has been newly developed by using a palladium complex as a catalyst together with a phosphine‐borane ligand. The best phosphine‐borane ligand for this direct allylation has been revealed to be Ph2P(CH2)4(9‐BBN) to produce a variety of desirable allylated products in high yields.
Remarkable rate enhancement of palladium-catalyzed allylic alkylation in water using a colloidal dispersion system
作者:Shū Kobayashi、William W.-L Lam、Kei Manabe
DOI:10.1016/s0040-4039(00)01027-3
日期:2000.8
The rate of palladium-catalyzed allylic alkylation was dramaticallyenhanced in a colloidal dispersion system created by a neutral surfactant, Triton X-100, in water.
Nickel-Catalysed Bis-Allylation of Activated Nucleophiles with Allyl Alcohol
作者:Rémi Blieck、Mohamed Salah Azizi、Alexis Mifleur、Maxime Roger、Clément Persyn、Mathieu Sauthier、Hélène Bonin
DOI:10.1002/ejoc.201501556
日期:2016.2
Nickel-based catalysis allows the efficient bis-allylation of soft nucleophiles with allylic alcohols. The reaction is best promoted by a combination of Ni(cod)2 (cod = cyclooctadienyl) and diphenylphosphinobutane under additive-free conditions. Alternatively, nickel(II) precursors can be used provided that a reductant is used to generate the nickel(0) species. The NiCl2/Zn combination is particularly
镍基催化允许软亲核试剂与烯丙醇的有效双烯丙基化。在无添加剂的条件下,Ni(cod)2(cod = 环辛二烯基)和二苯基膦丁烷的组合可以最好地促进反应。或者,可以使用镍 (II) 前体,前提是使用还原剂生成镍 (0) 物种。NiCl2/Zn 组合特别简单,可以有利地替代对空气更敏感的 Ni(cod)2 前体的使用。使用适用于双烯丙基化反应的亲核试剂和烯丙基衍生物研究了反应范围。
Ruthenium-catalyzed Decarboxylative and Dehydrogenative Formation of Highly Substituted Pyridines from Alkene-tethered Isoxazol-5(4<i>H</i>)-ones
A ruthenium-catalyzed reaction of alkene-tethered isoxazol-5(4H)-ones affording pyridines has been developed. Di-, tri-, and tetrasubstituted pyridines were obtained from various isoxazolones in go...