54560-81-5Relevant academic research and scientific papers
Construction of an M3L2A6 cage with small windows from a flexible tripodal ligand and Cu(hfac)3
Ikeda, Mari,Ohno, Keiji,Kasumi, Yuki,Kuwahara, Shunsuke,Habata, Yoichi
supporting information, p. 24 - 26 (2014/01/23)
An M3L2A6 cage has been prepared with small windows from a tripodal ligand, L, and Cu(hfac)2. Cold spray ionization mass spectrometry of a mixture of L and Cu(hfac)2 revealed the formation of a Cu3L2hfac6 cage in solution. X-ray crystallography showed that the Cu3L 2hfac6 cage included neutral molecules such as THF and CHCl3. Furthermore, the six hfac anions have been shown to play an important role in holding neutral guest molecules securely in place.
Ruthenium-catalyzed formation of tertiary amines from nitriles and alcohols
Liu, Saiwen,Chen, Ru,Deng, Guo-Jun
supporting information; experimental part, p. 489 - 491 (2011/06/25)
A ruthenium-catalyzed tertiary-amine formation was developed using the borrowing hydrogen strategy. Various tertiary amines were obtained efficiently from nitriles and primary alcohols. Two possible pathways were found for the tertiaryamine formation under RuCl3/dppf catalytic conditions. The nitriles mainly act as a nitrogen source in this kind of transformation.
Multialkylation of aqueous ammonia with alcohols catalyzed by water-soluble Cp*Ir-ammine complexes
Kawahara, Ryoko,Fujita, Ken-Ichi,Yamaguchi, Ryohei
supporting information; experimental part, p. 15108 - 15111 (2010/12/24)
Novel water-soluble Cp*Ir-ammine complexes have been synthesized, and a new and highly atom-economical system for the synthesis of organic amines using aqueous ammonia as a nitrogen source has been developed. With a water-soluble and air-stable Cp*Ir-ammine catalyst, [Cp*Ir(NH 3)3][I]2, a variety of tertiary and secondary amines were synthesized by the multialkylation of aqueous ammonia with theoretical equivalents of primary and secondary alcohols. The catalyst could be recycled by a facile procedure maintaining high activity. A one-flask synthesis of quinolizidine starting with 1,5,9-nonanetriol was also demonstrated. This new catalytic system would provide a practical and environmentally benign methodology for the synthesis of various organic amines.
A new atom-economical and selective synthesis of secondary and tertiary alkylamines by means of Cp*Iridium complex catalyzed multiple N-alkylation of ammonium salts with alcohols without solvent
Yamaguchi, Ryohei,Mingwen, Zhu,Kawagoe, Shoko,Asai, Chiho,Fujita, Ken-Ichi
experimental part, p. 1220 - 1223 (2009/12/04)
A new atom-economical and selective synthetic method for secondary and tertiary alkylamines has been achieved by means of (pentamethylcyclopentadienyl) iridium (Cp*Ir) complex catalyzed multiple N-alkylations of ammonium salts with primary and secondary alcohols without solvent. Georg Thieme Verlag Stuttgart.
Selective synthesis of secondary and tertiary amines by Cp*iridium-catalyzed multialkylation of ammonium salts with alcohols
Yamaguchi, Ryohei,Kawagoe, Shoko,Asai, Chiho,Fujita, Ken-Ichi
, p. 181 - 184 (2008/09/18)
(Chemical Equation Presented) The efficient selective synthesis of secondary and tertiary amines has been achieved by means of Cp*Ir- catalyzed multialkylation of ammonium salts with alcohols without solvent: the reactions of ammonium acetate with alcohols gave tertiary amines exclusively, while those of ammonium tetrafluoroborate afforded secondary amines selectively. Using this method, secondary 5- and 6-membered cyclic amines were synthesized from ammonium tetrafluoroborate and diols in one pot.
