Regeneration of Carbonyl Compounds from Azines with Cerium(IV) Ammonium Nitrate
作者:Miroslaw Giurg、Jacek Mlsochowski
DOI:10.1080/00397919908086590
日期:1999.12.1
Abstract Azines treated with cerium(IV) ammoniumnitrate in acetonitrile under mild conditions afforded aromatic aldehydes and ketones in high to excellent yields.
Abstract In the current protocol, amine functionalized montmorillonite K10 nanoclay (NH 2 -MMT) was applied to catalyze the formation of CN bonds in the synthesis of azines and 2-aminothiazoles at room temperature. In comparison with the current methods of CNbondformation, this approach displays specific advantages include atom economy, clean conversion, design for energy efficiency, the use of
Reaction of CBrF2–CBrF2 with hydrazones of aromatic aldehydes
作者:Valentine G. Nenajdenko、Georgy N. Varseev、Vasily N. Korotchenko、Alexey V. Shastin、Elisabeth S. Balenkova
DOI:10.1016/j.jfluchem.2004.04.002
日期:2004.9
An olefination of hydrazones of aromatic aldehydes by CBrF2–CBrF2 under copper catalysis was investigated. In situ prepared aldehydes hydrazones were converted to (3-bromo-2,2,3,3-tetrafluoropropyl)arenes by reaction with CBrF2–CBrF2 in the presence of CuCl. Subsequent elimination of HF by sodium hydroxide resulted in stereospecific formation of fluorocontaining alkenes. Elimination proceeds stereoselectively
ONE-POT OXIDATION OF AZOMETHINE COMPOUNDS INTO ARENECARBOXYLIC ACIDS
作者:Mirosław Giurg、Samy B. Said、Ludwik Syper、Jacek Młochowski
DOI:10.1081/scc-100105891
日期:2001.1
Aromatic azomethine compounds, such as aldazines 1, aldoximes 7 and tosylhydrazones 8 oxidized with 30% hydrogen peroxide in the presence of poly(bis-1,2-phenylene) diselenide (6) as catalyst produce arenecarboxylic acids 2 mostly in high to excellent yields. The presented one-pot procedure has a synthetic value.
Buu-Hoi,N.P.; Saint-Ruf,G., Bulletin de la Societe Chimique de France, 1968, p. 2489 - 2492