Replacing a stoichiometric silver oxidant with air: ligated Pd(<scp>ii</scp>)-catalysis to β-aryl carbonyl derivatives with improved chemoselectivity
作者:Mari Vellakkaran、Murugaiah M. S. Andappan、Nagaiah Kommu
DOI:10.1039/c3gc42504e
日期:——
Air was employed as a green reoxidant of Pd(0), replacing stoichiometric and toxic silver salt, in the chelation-controlled Pd(ii)-modulated arylative enolization of prop-2-en-1-ols to acquire synthetically-important β-aryl carbonyl derivatives.
Sustainable and selective transfer hydrogenation using waste shrimp shell‐based tetrazene‐Ru (II) <i>para</i>‐cymene catalyst with ethanol as a hydrogen source
作者:Rahul Daga Patil、Amishwar Raysing Shelte、Ankush V. Biradar、Sanjay Pratihar
DOI:10.1002/aoc.7221
日期:2023.10
ruthenium-embedded transferhydrogenation catalysts supported on shrimp shells. These catalysts were employed for the selective transferhydrogenation of unsaturated carbonyl/aldehydes to saturated carbonyl/alcohols, utilizing ethanol as the hydrogen source and potassium carbonate as the base. The performance, selectivity, and reusability of the catalyst were thoroughly assessed through spectroscopic studies
Synthesis and structure of Pd(<scp>ii</scp>) pincer complexes: catalytic application in β-alkylation of secondary alcohols involving sequential dehydrogenation of alcohols <i>via</i> the borrowing hydrogen approach
作者:Sekar Pranesh Kavin、Rengan Ramesh
DOI:10.1039/d3dt01628e
日期:——
Herein, we report an efficient and sustainable approach for the selective synthesis of ketones by palladium pincer catalyzed β-alkylation of secondaryalcohols with aromatic primary alcohols via the borrowing hydrogen (BH) approach for the first time. A set of new Pd(II) ONO pincer complexes was synthesized and characterised by elemental analysis and spectral techniques (FT-IR, NMR and HRMS). The solid-state
Ruthenium(II)-Catalyzed Hydrogenation and Tandem (De)Hydrogenation <i>via</i> Metal–Ligand Cooperation: Base- and Solvent-Assisted Switchable Selectivity
作者:Rahul Daga Patil、Sanjay Pratihar
DOI:10.1021/acs.joc.2c01965
日期:——
carbonate)-assisted switchable synthesis of saturated ketone and α-methyl saturated ketone from α,β-unsaturated ketone is developed. Mechanistic aspects, evaluated from spectroscopic studies, in situ monitoring of the reaction progress, control studies, and labeling studies, further indicate the involvement of a tandem dehydrogenation–condensation–hydrogenation sequence in the reaction, in which the interconvertible