Addition of Trialkylalanes to Imines under Zirconium Catalysis
作者:Jan Szymoniak、Clément Denhez、Jean-Luc Vasse
DOI:10.1055/s-2005-870028
日期:——
Trialkylalanes, which are inert toward imines, undergo addition to them in the presence of a catalytic amount of dichlorodicyclopentadienylzirconium(IV) (Cp2ZrCl2). The reaction tolerates the presence of several functional groups in the starting imine such as halo, amide, nitrile, and hydroxy groups. A possible reaction pathway is proposed involving metallacyclic intermediates.
The synthesis of π-conjugated polymers via an environmentally friendly procedure is generally challenging. Herein, we describe the synthesis of divanillin-based polyazomethines, which are derived from a potentially bio-based monomer. The polymerization is performed in 5 min under microwave irradiation without any metallic catalyst, with water as the only by-product. The vanillin-based polyazomethines
通过环境友好的方法合成 π 共轭聚合物通常具有挑战性。在这里,我们描述了基于联香草醛的聚偶氮甲碱的合成,它衍生自一种潜在的生物基单体。在没有任何金属催化剂的情况下,在微波辐照下 5 分钟内进行聚合,水是唯一的副产物。通过 SEC、TGA 和 UV-Vis 光谱对基于香草醛的聚偶氮甲碱进行了表征。通过 X 射线衍射和 UV-Vis 光谱设计和表征模型化合物。用作模型的基于香草醛的甲亚胺的结构/性能研究使我们能够明确地确认 E 构型并突出基于香草醛的聚合物的交叉共轭性质。
RAI M.; KRISHAN K.; SINGH A., INDIAN J. CHEM., 1978, B 16, NO 9, 834-835
作者:RAI M.、 KRISHAN K.、 SINGH A.
DOI:——
日期:——
RAI M.; KUMAR S.; KRISHAN K.; SINGH A., INDIAN J. CHEM., 1979, B 17,, NO 3, 287-288
作者:RAI M.、 KUMAR S.、 KRISHAN K.、 SINGH A.
DOI:——
日期:——
KUMAR P.; MISHRA H. D.; MUKERJEE A. K., SYNTHESIS, 1980, NO 10, 836-839