4013-98-3Relevant articles and documents
Diazaphospholene Precatalysts for Imine and Conjugate Reductions
Adams, Matt R.,Tien, Chieh-Hung,Huchenski, Blake S. N.,Ferguson, Michael J.,Speed, Alexander W. H.
supporting information, p. 6268 - 6271 (2017/05/19)
The first examples of 1,3,2-diazaphospholene-catalyzed imine reduction and conjugate reduction reactions are reported. This approach employs readily synthesized alkoxydiazaphospholene precatalysts that can be handled in open air. Reduction of substrates containing Lewis basic functionality, isolated unsaturation, and protic functional groups was accomplished. The synthetic utility of this approach is demonstrated by the synthesis of the important antiparkinson medicine rasagiline and the natural product zingerone.
N-alkylation of ethylenediamine with alcohols catalyzed by CuO-NiO/γ-Al2O3
Huang, Jia-Min,Xu, Lu-Feng,Qian, Chao,Chen, Xin-Zhi
experimental part, p. 304 - 307 (2012/08/28)
A simple method for N-alkylation of 1, 2-diaminoethane with different alcohols in a fixed-bed reactor using cheap CuO-NiO/γ-Al2O 3 as the catalyst has been developed. The present catalytic system was applicable in the N-alkylation of 1, 2-diaminoethane with both primary and secondary alcohols. Mono-N-alkylation of 1, 2-diaminoethane with low-carbon alcohols resulted in high yields; the yields of tetra-N-alkylation of 1, 2-diaminoethane with low-carbon alcohols declined markedly with the increase of the molecular volume of alcohols.
Effect of ligand substituents in olefin polymerisation by half-sandwich titanium complexes containing monoanionic iminoimidazolidide ligands-MAO catalyst systems
Nomura, Kotohiro,Fukuda, Hiroya,Katao, Shohei,Fujiki, Michiya,Kim, Hyun Joon,Kim, Dong-Hyun,Zhang, Shu
scheme or table, p. 7842 - 7849 (2011/09/20)
Various half-sandwich titanium complexes containing iminoimidazolidide ligands, CpTiCl2[1,3-R2(CH2N)2CN] (1a-d) [R = Ph (a), 2,6-Me2C6H3 (b), cyclohexyl (c), tBu (d)], have been employed as the catalyst precursors for ethylene polymerisation, syndiospecific styrene polymerisation, and copolymerisation of ethylene with 1-hexene in the presence of MAO cocatalyst; 1d showed the highest catalytic activity for ethylene polymerisation whereas 1b showed the highest activity for syndiospecific styrene polymerisation.