Onium Sulfates and Hydrogen Sulfates: Products of Reactions of Sulfur(IV) Oxide with Aqueous Solutions of Alkylamines and Aniline
摘要:
The reaction products formed in the SO2-L-H2O-O-2 systems (L is n-propylamine, n-butylamine, tert-butylamine, n-heptylamine, n-octylamine, aniline) were isolated and identified as "onium" salts [n-C3H7NH3](2)SO4, [n-C4H9NH3](2)SO4, [t-C4H9NH3](2)SO4, [n-C7H15NH3](3)SO4(HSO4), [n-C8H17NH3](3)SO4(HSO4), and [C6H5NH3](2)SO4. The products were characterized by elemental analysis, IR and Raman spectroscopy, mass spectrometry, and thermogravimetry.
Calix[6]arene-Based Cascade Complexes of Organic Ion Triplets Stable in a Protic Solvent
作者:Steven Moerkerke、Mickaël Ménand、Ivan Jabin
DOI:10.1002/chem.201001193
日期:——
the two ammoniumions accommodated in the cavities. The resulting [1+1+2] quaternarycomplexes represent rare examples of cascade complexes with organic cations. These complexes are unique: 1) They are stable even in a markedly protic solvent, 2) the recognition of the ion triplets proceeds in a cooperative way through an induced‐fit process and with a high selectivity, linear cations and doubly charged
Ionic-Liquid Salt-Mediated Synthesis of 4′-(Pyridyl)-terpyridines
作者:Sumit V. Jadhav、Pravin G. Ingole、Hari C. Bajaj
DOI:10.1080/00397910903046838
日期:2010.3.19
One-pot reactions to produce isomeric 4'-(pyridyl) 2,2':6',2''-terpyridine under moderate conditions are described using imidazolium-based ionic liquid and quaternary ammonium-based molten salts as solvent media. The use of eutectic molten salts as a reaction media proved effective in sequential aldol and Michael addition reactions, leading to substituted terpyridines. The desired product was obtained in reasonable yield via a simple, one-pot reaction.