Silica Sulfuric Acid as an Efficient Reagent for the Synthesis of Symmetrical Ethers Under Mild and Heterogeneous Conditions
作者:Farhad Shirini、Mohammad Ali Zolfigol、Kamal Mohammadi
DOI:10.1080/714040949
日期:2003.11.1
A mild and efficient method for the synthesis of symmetrical ethers using silica sulfuric acid is reported. All reactions are performed under compeletly heterogeneous conditions in good to high yields.
Application of Yttrium Iron Garnet as a Powerful and Recyclable Nanocatalyst for One-Pot Synthesis of Pyrano[2,3-c]pyrazole Derivatives under Solvent-Free Conditions
作者:E. Sedighinia、R. Badri、A. R. Kiasat
DOI:10.1134/s1070428019110186
日期:2019.11
The application of yttrium iron garnet (YIG) superparamagnetic nanoparticles as a new recyclable and highly efficient heterogeneous magnetic catalyst for one-pot synthesis of pyrano[2,3-c]pyrazole derivatives under solvent-free conditions, as well as etherification and esterification reactions are described. The advantages of the proposed method include the lack of organic solvents, clean reaction
钇铁石榴石(YIG)超顺磁性纳米粒子作为新型可回收高效异质磁性催化剂在无溶剂条件下一锅合成吡喃并[2,3- c ]吡唑衍生物以及醚化和酯化反应的应用描述。所提出的方法的优点包括缺少有机溶剂,清洁的反应,催化剂的快速去除,短的反应时间,优异的产率和催化剂的可回收性。
Synthesis of Ethers from Carbonyl Compounds by Reductive Etherification Catalyzed by Iron(III) and Silyl Chloride
作者:Reko Leino、Risto Savela
DOI:10.1055/s-0034-1380155
日期:——
with ethyl acetate as the solvent. A simple iron- and silylchloridecatalyzed method for the preparation of symmetrical and nonsymmetrical ethers is presented. Various aldehydes and ketones were reductively etherified by using triethylsilane as a reducing agent in the presence of 2 mol% of iron(III) oxo acetate and 8 mol% of chloro(trimethyl)silane. The reactions can be carried out at ambient temperatures
Oxidation of Dibenzyl Ethers by Dilute Nitric Acid
作者:S. R. Joshi、S. B. Sawant、J. B. Joshi
DOI:10.1021/op000085o
日期:2001.3.1
A simple process for the manufacture of benzaldehyde (BzH) by oxidation of dibenzylether (DBE) has been reported in this paper. Two-phase reaction between dibenzylether and aqueous dilute nitric acid in the presence of catalytic amount of sodium nitrite has been investigated. Effect of stirring speed, concentration of nitric acid in the aqueous phase, mole ratio of reactants, sodium nitrite concentration