Efficient construction of C–C bonds from aryl halides/aryl esters with arylboronic acids catalysed by palladium(II) thiourea complexes
作者:Manikandan Thimma Sambamoorthy、Ramesh Rengan、Malecki Jan Grzegorz
DOI:10.1002/aoc.5181
日期:2019.11
Interestingly, the palladium(II) thiourea complexes showed the highest catalytic activity with 0.1 mol% catalyst loading in Suzuki–Miyaura cross‐coupling reactions utilizing a range of aryl bromides/unactivated aryl chlorides with arylboronicacids as coupling partners in aqueous–organic media. Syntheses of diaryl ketones using aryl esters and arylboronicacids as coupling partners were also achieved with low
Nickel(II)‐Catalyzed Selective
<i>(E)</i>
‐Olefination of Methyl Heteroarenes Using Benzyl Alcohols via Acceptorless Dehydrogenative Coupling Reaction
作者:Gunasekaran Balamurugan、Rengan Ramesh
DOI:10.1002/cctc.202101455
日期:2022.1.21
characterized with FT-IR, NMR, HRMS and single crystal X-ray method. The new complexes were tuned as effective homogeneous catalysts for synthesis of selective (E)-olefins from the reaction of methyl heteroarenes and benzyl alcohols via greener ADC methodology. The earth abundant nickel complexes performed well with 4 mol% of catalyst loading at 110 °C for 35 h, resulting in good to excellent yields (40–93 %)
Arene diruthenium(II)‐mediated synthesis of imines from alcohols and amines under aerobic condition
作者:Veerappan Tamilthendral、Rengan Ramesh、Jan Grzegorz Malecki
DOI:10.1002/aoc.6122
日期:2021.3
the newly synthesized dinuclear arene Ru(II) complex were demonstrated towards the synthesis of imines from coupling of alcohols and amines in the aerobic condition. Analytical and various spectral methods have been used to establish the unprecedented formation of the new thiolato‐bridged dinuclear ruthenium complex. The molecular structure of the titled complex was evidenced with aid of X‐ray crystallographic
Polymorphs of 1-(5-Methylthiazol-2-yl)-3-phenylthiourea and Various Anion-Assisted Assemblies of Two Positional Isomers
作者:Nithi Phukan、Jubaraj B. Baruah
DOI:10.1021/cg5003379
日期:2014.5.7
differs. The sulfate salt (HPTH1)2(SO4) is formed by reaction of sulfuric acid with PTH1, but PTH2 forms the bisulfate salt (HPTH2)HSO4·H2O. PTH1 forms the corresponding dihydrogen phosphate salt upon reaction with orthophosphoric acid; the dihydrogen phosphate anions are held together in the form of cyclic hydrogen-bonded hexameric assemblies in the lattice. Water loss from the assemblies of hydrated salt