Systematic Evaluation of Sulfoxides as Catalysts in Nucleophilic Substitutions of Alcohols
作者:Sebastian Motsch、Christian Schütz、Peter H. Huy
DOI:10.1002/ejoc.201800907
日期:2018.9.9
Out of an in‐depth study of a range of sulfinyl compounds in the transformation of alcohols into chloro alkanes emerged (2‐methoxyphenyl)methyl sulfoxide as optimal Lewis base catalyst. While this catalyst allowed the synthesis of benzylic chlorides in turn‐over numbers up to 50, aliphatic alcohols are non‐suitable substrates due to competing Pummerer rearrangement.
An organic–inorganic hybrid supramolecular framework material based on a [P<sub>2</sub>W<sub>18</sub>O<sub>62</sub>]<sup>6−</sup>cluster and Yb & Na complexes of pyridine-2,6-dicarboxylic acid: a catalyst for selective oxidation of sulfides in water with H<sub>2</sub>O<sub>2</sub>
作者:Pulikanti Guruprasad Reddy、Narsimha Mamidi、Chullikkattil P. Pradeep
DOI:10.1039/c5ce02546j
日期:——
rare-earth-containing polyoxometalate (RECP) hybrid, (Yb (PDCH2)2(PDCH))·Na(H2O)2·(Na(PDCH)(H2O)2)}2[P2W18O62]·14H2O (1), based on [P2W18O62]6− cluster anions and cationic Yb & Na complex units of pyridine-2,6-dicarboxylic acid (PDCH2) has been synthesized under normal reaction conditions, which exhibited a supramolecular 3-D framework structure in the crystal lattice. Hybrid 1 acts as a green catalyst
含稀土的多金属氧酸盐(RECP)杂种,(Yb(PDCH 2)2(PDCH))·Na(H 2 O)2 ·(Na(PDCH)(H 2 O)2)} 2 [P 2 W 18 O 62 ]·14H 2 O(1)基于[P 2 W 18 O 62 ] 6-簇阴离子和吡啶-2,6-二羧酸(PDCH 2)的阳离子Yb和Na络合单元已合成在正常反应条件下,其在晶格中表现出超分子3-D骨架结构。混合动力1用作绿色催化剂,以H 2 O 2为试剂选择性氧化水中的硫化物。