3299-45-4Relevant articles and documents
Synthesis of quinoline derivatives from anilines and aldehydes catalyzed by Cp2ZrCl2 and recyclable Cp2ZrCl2/MCM-41 system
Guo, Qiaoxia,Liao, Lijun,Teng, Weiling,Ren, Shenyong,Wang, Xiao,Lin, Yingying,Meng, Fanfang
, p. 117 - 122 (2016/02/03)
A facile method for the synthesis of quinoline derivatives using catalytic amount of Cp2ZrCl2 or Cp2ZrCl2 supported on MCM-41 (Cp2ZrCl2/MCM-41) in reaction of anilines and aldehydes is described. When Cp2ZrCl2/MCM-41 was used as catalyst, the yields of quinolines were enhanced by 5-15% compared with Cp2ZrCl2 as catalyst alone under the same reaction conditions. More importantly, Cp2ZrCl2/MCM-41 catalyst can be reused at least thrice by simple recover via filtration in air. Moreover, both Cp2ZrCl2 and Cp2ZrCl2/MCM-41 showed good catalytic activities to generate corresponding quinoline derivatives in moderate to good yields by varying the substituent of aniline and aldehyde. And the reaction conditions were optimized by studying the influences of reactant ratio, additives, solvent effect and reaction temperatures.
Base-initiated oxidation of alkylindeneanilines by oxygen
Grigoryan, G. S.,Tovmasyan, V. S.,Malkhasyan, A. Ts.,Martirosyan, G. T.,Beletskaya, I. P.
, p. 50 - 56 (2007/10/02)
Oxidation and alkylation processes compete in the oxidative transformation of alkylindeneanilines in an alkaline medium.Oxidation leads mainly to the formation of formanilide anbd the corresponding carbonyl compound.Alkylation leads to a product which easily eliminates the aniline molecule with the formation of a derivative of the 1-aza-1,3-diene.A combination of alkylation and oxidation led to derivatives of quinoline.It is assumed that the alkylation-dehydrocyclization-elimination of alkylindeneanilines to quinolines by the action of oxygen and alkali is a variant of the Doebner-Miller reaction.During oxidation in the presence of sodium borohydride the products from conjugate oxidation-reductiono, i.e., the α-imino and β-amino alcohols, are also formed in addition to quinolines and oxidation and alkylation products.
