Synthesis of Some New Fused/Spiroheterocyclic Compounds Incorporating Quinone Compounds
作者:A. K. Khalafallah、R. M. Abd El-Aal、N. A. A. El Kanzi
DOI:10.1002/jccs.200200061
日期:2002.6
A series of fused and spiro pyrazolones, isoxazolines, pyrimidines, β-lactams, and thiazolidinones incorporating 4-amino-2-methyl-5,10-dioxo-1,5,10,11-tetrahydrobenz[g]quinoline 3-carbonitrile 1 and 4-amino-2-methyl-5,6,11-trioxo-1,4,4a,5,6,11,12,12a-octahydro-1,12-diazanaphthacene 3-carbonitrile 2. 7,8a-c, 15,16a-c, 19,20a-d, 21,22a-d, have been synthesised by cyclocondensation addition reaction and
3-(5-carboxy-4-substituted-phenyl)-(thio)uracil-esters and salts
申请人:Hoffmann-La Roche Inc.
公开号:US04746352A1
公开(公告)日:1988-05-24
The disclosure is concerned with novel 3-aryluracils of the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and X have the significances given in the description, as well as salts thereof and their manufacture, weed control compositions which contain such compounds as active ingredients and the use of the active ingredients or compositions for the control of weeds. The disclosure also concerns certain herbicidally active starting materials and weed control compositions containing these as active ingredients.
Photochemistry of charge-transfer complexes of tetracyanoethylene and tetracyanoquinodimethane with aliphatic nitriles
作者:Kazuo Tsujimoto、Toshiro Fujimori、Mamoru Ohashi
DOI:10.1039/c39860000304
日期:——
Upon irradiation, tetracyanoethylene (TCNE) in acetonitrile gave 2-amino-1,1-dicyanopropene, while tetracyanoquinodimethane (TCNQ) in isobutyronitrile gave 1-(4-dicyanomethylphenyl)-2-methylpropane-1,1,2-tricarbonitrile; mechanisms involving electron transfer in which liphatic nitriles behave as electron donors are proposed.
The NMR spectra of α-cyano-β-amino-β-alkylacrylic esters prepared from α-cyano-β-methoxy-β-alkylacrylic esters and simple amines have been studied. It has been found that these aminoesters, in a variety of solvents, are all present in an intramolecular hydrogen-bonded enamine form with a chelate ring.