Ti/Pd Bimetallic Systems for the Efficient Allylation of Carbonyl Compounds and Homocoupling Reactions
作者:Alba Millán、Araceli G. Campaña、Btissam Bazdi、Delia Miguel、Luis Álvarez de Cienfuegos、Antonio M. Echavarren、Juan M. Cuerva
DOI:10.1002/chem.201003315
日期:2011.3.28
The allylation, crotylation and prenylation of aldehydes and ketones with stable and easily handled allylic carbonates is promoted by a Ti/Pd catalytic system. This Ti/Pd bimetallic system is especially convenient for the allylation of ketones, which are infrequent substrates in other related protocols, and can be carried out intramolecularly to yield five‐ and six‐membered cyclic products with good
Ti / Pd催化体系可促进醛和酮与稳定且易于处理的烯丙基碳酸酯的烯丙基化,丁酰化和烯丙基化。这种Ti / Pd双金属体系特别适合于酮的烯丙基化,酮是其他相关规程中不常见的底物,并且可以在分子内进行生产,从而产生具有良好立体选择性的五元和六元环状产物。此外,Ti / Pd介导的还原反应和Würtz型二聚反应可以很容易地从碳酸烯丙酯和羧酸酯中进行。
Nickel-catalysed electrochemical carboxylation of allylic acetates and carbonates
作者:M.J. Medeiros、C. Pintaric、S. Olivero、E. Dunach
DOI:10.1016/j.electacta.2010.12.066
日期:2011.4
The electrochemical carboxylation of a series of allylic acetates and carbonates was carried out in the presence of CO(2) under atmospheric pressure, with a catalytic amount of nickel-bipyridine complex, to afford the corresponding beta,gamma-unsaturated carboxylic acids. In the absence of nickel catalyst, alcohols were obtained. (C) 2011 Elsevier Ltd. All rights reserved.
Divergent Titanium‐Mediated Allylations with Modulation by Nickel or Palladium
作者:Araceli G. Campaña、Btissam Bazdi、Noelia Fuentes、Rafael Robles、Juan M. Cuerva、J. Enrique Oltra、Susana Porcel、Antonio M. Echavarren
DOI:10.1002/anie.200802520
日期:2008.9.15
Total Synthesis Establishes the Biosynthetic Pathway to the Naphterpin and Marinone Natural Products
作者:Lauren A. M. Murray、Shaun M. K. McKinnie、Henry P. Pepper、Reto Erni、Zachary D. Miles、Michelle C. Cruickshank、Borja López‐Pérez、Bradley S. Moore、Jonathan H. George
DOI:10.1002/anie.201804351
日期:2018.8.20
chloroperoxidase (VCPO) enzymes is key to this biosynthetic pathway, despite the absence of chlorine in these natural products. This speculation inspired a total synthesis to mimic the naphterpin/marinone biosynthetic pathway. In validation of this biogenetic hypothesis, two VCPOs were discovered that interconvert several of the proposed biosynthetic intermediates.