13182-96-2Relevant articles and documents
Polystyrene-supported CuI-imidazole complex catalyst for aza-Michael reaction of imidazoles with α,β-unsaturated compounds
Li, Lixia,Liu, Zuliang,Ling, Qilong,Xing, Xiaodong
, p. 178 - 184 (2012)
The polystyrene-supported CuI-imidazole complex catalyst was prepared and characterized by IR spectroscopy, elemental analysis, SEM/TEM and TG/DSC. The complex catalyst was globular with the size of 400-500 nm and showed a good thermal stability at high temperature. The immobilized Cu metal in the complex catalyst was about 0.85 mmol/g. By using the catalyst, aza-Michael reaction of imidazoles to α,β-unsaturated compounds was performed with good yields in 4-8 h. The catalyst showed an excellent recycling efficiency over five cycles without distinct leaching of metal from the polymer support.
Preparation and biological evaluation of 99mTc-N4IPA for single photon emission computerized tomography imaging of hypoxia in mouse tumor
Li, Nan,Zhu, Hua,Chu, Tai-Wei,Yang, Zhi
, p. 223 - 231 (2013)
In order to develop technetium-99m labeled nitroimidazole imaging agent for hypoxia in tumor, we have synthesized 99mTc-1-(4-nitroimidazole-yl)- propanhydroxyiminoamide, 99mTc-N4IPA complex, in high radiochemical purity and radiochem
Triethylammonium acetate (TEAA): A recyclable inexpensive ionic liquid promotes the chemoselective aza- and thia-Michael reactions
Verma, Akhilesh K.,Attri, Pankaj,Chopra, Varun,Tiwari, Rakesh K.,Chandra, Ramesh
experimental part, p. 1041 - 1047 (2009/11/30)
A new, highly efficient, inexpensive, recyclable, mild, convenient, and green protocol for chemoselective aza/thia-Michael addition reactions of amines/thiols to α,β-unsaturated compounds using triethylammonium acetate (TEAA) ionic liquid was developed. The catalyst can be recycled ten times and obviate the need for toxic and expensive catalysts.