Activation of CCl Bonds in Chloroalkanes by Nickel Oxide Nanoparticles: Formation of Tetrasubstituted Ammonium Salts from Tertiary Amines
作者:Kang Hyun Park、Il Gu Jung、Young Keun Chung、Jin Wook Han
DOI:10.1002/adsc.200600305
日期:2007.2.5
Nickel oxide nanoparticles, readily available and easy to handle, were found to be an effective catalyst in the catalytic activation of CCl bonds in chloroalkanes. Coupling reactions of chloroalkanes and tertiary amines in the presence of the nickel oxide nanoparticle catalyst gave moderate to high yields of quaternary ammonium salts depending upon the amines.
Orthoamide, LXVII [1]. Bis(diformylamino)methan – ein neues leistungsfähiges Formylierungsmittel für aromatische Verbindungen / Orthoamides, LXVII [1]. Bis(diformylamino)methane – a New Efficient Formylating Reagent for Aromatic Compounds
作者:Willi Kantlehner、Ernst Anders、Jochen Mezger、Edmont V. Stoyanov、Ralf Kreß、Kurt Wermann、Wolfgang Frey、Helmar Görls
DOI:10.1515/znb-2008-0406
日期:2008.4.1
N-(chloromethyl)diformamide (12) in acetonitrile. The action of tris(chloromethyl) amine (18) on sodium diformamide (8) affords tris(diformylaminomethyl)amine (19). The constitution of the compounds 7, 11 and 19 was confirmed by crystal structure determination. The nature of the products from the reactions of aromatic compounds with 12 depends on the Lewis acid which is used as activator. Thus the N-benzylformamides
changes the standard reaction pathway a of 1 in solution toward nucleophiles completely: the chlorinated N-vinylpyridinium salts 11 and 12 were formed after the reaction of 10 with pyridine or triphenylphosphane. These are useful intermediates for the synthesis of new N- and 4-substituted 1,4-dihydropyridines 13-15 as could be demonstrated for compound 11. To explain the reactivity pattern of compounds