New germanium(IV) complexes with N-[X-benzoyl]hydrazones of salicylaldehyde (X-H2L, where X = 2-, 3-, and 4-NO2; H2L = C6H4-CO-NH-NCH-C6H4OH) with the compositions [Ge(2-NO2-L)(2)], [Ge(3-NO2-L)(2)], and [Ge(4-NO2-L)(2)] were synthesized. The data of IR, UV, and H-1, C-13 NMR spectroscopy showed that the complexes had an octahedral structure and ligand coordination through the nitrogen atom of the azomethine group and two oxygen atoms of the doubly deprotonated form of the ligand. The thermal stability of the complexes was studied. The specific features of the mass spectrometric behavior of the substances in the gas phase under electron impact were considered.
A Versatile and Regiospecific Synthesis of Functionalized 1,3-Diarylisobenzofurans
作者:Jérôme Jacq、Cathy Einhorn、Jacques Einhorn
DOI:10.1021/ol801550a
日期:2008.9.1
A convenient, versatile, and regiospecific synthesis of functionalized 1,3-diarylisobenzofurans has been developed. It involves chemoselective addition of arylmagnesium reagents to the aldehyde function of o-aroylbenzaldehydes, themselves readily obtained by leadtetraacetateoxidation of N-aroylhydrazones of salicylaldehydes. Various functional groups, including nitro, iodo, or ester functionalities
Oxovanadium(V) catalysts for the
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CO
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fixation into cyclic carbonates under ambient pressure
作者:Tsung‐Yu Chen、Chia‐Hao Liu、Ming‐Li Tsai
DOI:10.1002/jccs.202200034
日期:2022.3
study, the synthesis and structural/spectroscopic characterizations of oxovanadium(V) complexes 2a–2f chelated with one-step synthesized hydrazone-imidate ligands were reported. The catalytic performance of the synthesized oxovanadium(V) complexes regarding the coupling reaction between epoxide and CO2 was successfully demonstrated with only 0.5 mol% loading of both oxovanadium(V) catalyst and [NBu4][Br]