Reaction of 2-acyl-3-aminobenzofurans with hydrazines
作者:Franco Gatta、Guido Settimj
DOI:10.1002/jhet.5570210401
日期:1984.7
While 2-acetyl and 2-benzoyl-3-aminobenzofurans did not react with hydrazine, monomethyl- and N,N-dimethylhydrazine to give the related hydrazones, their 3-N-(p-toluenesulfonyl) derivatives afforded them smoothly in good yields. Depending upon reaction conditions, products arising from hydrazone cyclization to benzofuropyrazoles and/or from furan ring cleavage at the C2O bond to give 5-(2-hydroxyphenyl)pyrazoles
Synthesis and Structure of Ruthenium(IV) Complexes Featuring N-Heterocyclic Ligands with an N–H Group as the Hydrogen-Bond Donor: Hydrogen Interactions in Solution and in the Solid State
作者:Josefina Díez、José Gimeno、Isabel Merino、Eduardo Rubio、Francisco J. Suárez
DOI:10.1021/ic200547k
日期:2011.6.6
Complexes 2a–2c and 3, which contain the pyrazole N–H group, exhibit intra- and intermolecular hydrogen bonds with chloride ligands [N–H···Cl distances (Å): intramolecular, 2.30–2.78; intermolecular, 2.59–2.77]. Complexes 2e and 3 bearing respectively O–H and C═O groups also feature N–H···O interactions [intramolecular (2e), 2.27 Å; intermolecular (3), 2.00 Å]. Chelated complex 5, lacking the O–H group
Mononuclear and dinuclear manganese compounds stabilized by supramolecular interactions
作者:Marta Viciano-Chumillas、Mónica Giménez-Marqués、Stefania Tanase、Ilpo Mutikainen、Urho Turpeinen、Jan M. M. Smits、René de Gelder、L. Jos de Jongh、Jan Reedijk
DOI:10.1039/c2dt31060k
日期:——
trinuclear compound containing two manganese(III) ions and a sodium(I) ion. A remarkable feature is the spontaneous formation of the formate ion as a result of the methanol or methoxide oxidation in compounds 1 and 3. Using ethanol precludes the formation of the formate and compound 4 is obtained. The molecular structure of all compounds is stabilized by supramolecular interactions, including strong hydrogen
New routes to manganese higher-nuclearity topologies: synthesis of the cluster [Mn8(µ4-O)4(phpz)8(thf)4]
作者:Stefania Tanase、Guillem Aromí、Elisabeth Bouwman、Huub Kooijman、Anthony L. Spek、Jan Reedijk
DOI:10.1039/b504215a
日期:——
Reaction of Mn(ClO4)2·6H2O with 3(5)-methyl-5(3)-(2-hydroxyphenyl)pyrazole (H2phpz) affords a highly asymmetric octanuclear manganese(III) cluster resulting from the different bridging coordination modes of the ligand H2phpz.