22778-02-5Relevant academic research and scientific papers
Hybrid assemblies based on a gadolinium-containing polyoxometalate and a cationic polymer with spermine side chains for enhanced mri contrast agents
Chai, Wenqiang,Wang, Shan,Zhao, Hang,Liu, Guifeng,Fischer, Karl,Li, Haolong,Wu, Lixin,Schmidt, Manfred
supporting information, p. 13317 - 13321 (2013/10/08)
Supramolecular assembly: Spherical and stable hybrid assemblies based on a cationic polymer with spermine side chains and an anionic Gd3+- containing polyoxometalate cluster (GdW) are prepared by electrostatic interaction (see figure). The T1-weighted MRI performance of GdW is enhanced about three times in the assemblies; meanwhile, the assemblies show good biocompatibility, which enables them to be promising candidates for MRI contrast agents. Copyright
A Convenient Preparation of Bis(thioacyl) Sulfides
Kato, Shinzi,Masumoto, Hiroki,Kimura, Masahiro,Murai, Toshiaki,Ishida, Masaru
, p. 304 - 306 (2007/10/02)
Bis(thioacyl) sulfides are prepared in 60-90percent yield in a one-pot reaction of piperidinium or alkali metal dithiocarboxylates with 2-chloro-1-methylpyridinium iodide at room temperature.
Preparation and Some Reactions of Bis(thioacyl) Sulfides
Kato, Shinzi,Shibahashi, Hiroshi,Katada, Tomonori,Takagi, Takashi,Noda, Ippei,et al.
, p. 1229 - 1244 (2007/10/02)
Reaction of dithioic acids with dicyclohexylcarbodiimide has been found to give the corresponding bis(thioacyl) sulfides 1 in good yield, which are very useful thioacylating reagents under mild reaction conditions.Most of the aromatic thioanhydrides (1, R = aromatic) are fairly stable green crystals at room temperature, but the aliphatic ones (1, R = aliphatic) are unstable purple oils which dimerize at room temperature to give the dithietanes 5.The reactions with nucleophiles are discussed.
The Preparation and Some Reactions of Unsymmetrical Acyl Thioacyl Sulfides
Kato, Shinzi,Sugino, Katsumi,Matsuzawa, Yukihiko,Katada, Tomonori,Noda, Ippei,et al.
, p. 1798 - 1811 (2007/10/02)
A number of unsymmetrical acyl thioacyl sulfides have been prepared and characterized by the reaction of piperidinium or sodium dithiocarboxylates with acyl chlorides or by desulfurization reaction of acyl thioacyl disulfides with triphenylphosphine.They are deep blue oils or light green crystals and very unstable thermally and for moisture.The n --> ?* transitions of the thiocarbonyl group of 1 appear in higher wave length region than those of the corresponding symmetrical bis(thioacyl) sulfides .Some reactions with nucleophiles are discussed.It was found that the symmetricallization reaction of these unsymmetrical acyl thioacyl sulfides occurs in the presence of base such as lithium ethanethiolate to give the symmetrical bis(thioacyl) disulfides in fair yield.
