14164-34-2Relevant articles and documents
volution of Hydrogen in the Reaction of Hydroheteroaromatic Compounds with Dehydrogenating Agents
Morkovnik, A. S.,Ivakhnenko, E. P.,Bogachev, Yu. G.,Tertov, B. A.,Berberova, N. T.,Okhlobystin, O. Yu.
, p. 168 - 173 (1988)
The yields of molecular hydrogen in the reactions of benzimidazolines 1,2-dihydropyrimidines with a number of dehydrogenating agents have been determined.The formation of hydrogen is due to breakdown of the cation-radicals of the hydrohetarenes formed in
Electronic absorption and emission properties of bishydrazone [2?×?2] metallosupramolecular grid-type architectures
Holub, Jan,Santoro, Antonio,Lehn, Jean-Marie
supporting information, p. 223 - 231 (2019/06/07)
Several ditopic ligands containing two tridentate bishydrazone coordination subunits and their Zn(II) and Cd(II) [2 × 2] grid-type complexes were prepared and their photoluminescent properties studied. A special attention was devoted to the influence of the orientation of the hydrazone group N–N[dbnd]in the core of the ligands and their complexes. Its reversal from [pyridine[dbnd]N–N–pyrimidine] (L1) to [pyridine–N–N[dbnd]pyrimidine] (L2) has a strong impact on the observed absorption and emission behaviour of particular ligands (L1 and L2) as well as of their [2 × 2] grid assemblies. The further lateral functionalization of the ligands led to different emission quantum yields of the resulting grids, while their emission and absorption spectra varied very little. The simplest derivative L1 turned out to have the best performance with, for its Zn(II) complex, relatively high quantum yield 60%.
Iron Catalysis for Modular Pyrimidine Synthesis through β-Ammoniation/Cyclization of Saturated Carbonyl Compounds with Amidines
Chu, Xue-Qiang,Cao, Wen-Bin,Xu, Xiao-Ping,Ji, Shun-Jun
, p. 1145 - 1154 (2018/06/18)
An efficient method for the modular synthesis of various pyrimidine derivatives by means of the reactions of ketones, aldehydes, or esters with amidines in the presence of an in situ prepared recyclable iron(II)-complex was developed. This operationally simple reaction proceeded with broad functional group tolerance in a regioselective manner via a remarkable unactivated β-C-H bond functionalization. Control experiments were performed to gain deep understanding of the mechanism, and the reactions are likely to proceed through a designed TEMPO complexation/enamine addition/transient α-occupation/β-TEMPO elimination/cyclization sequence.