A general strategy for elaboration of the dithiocarbonyl functionality, -(C:O)SS-: application to the synthesis of bis(chlorocarbonyl)disulfane and related derivatives of thiocarbonic acids
A general strategy for elaboration of the dithiocarbonyl functionality, -(C:O)SS-: application to the synthesis of bis(chlorocarbonyl)disulfane and related derivatives of thiocarbonic acids
Kinetic Study of the Phenolysis of <i>O</i>-Methyl and <i>O</i>-Phenyl <i>O</i>-2,4-Dinitrophenyl Thiocarbonates and <i>O</i>-Ethyl 2,4-Dinitrophenyl Dithiocarbonate
作者:Enrique A. Castro、David Arellano、Paulina Pavez、José G. Santos
DOI:10.1021/jo034538+
日期:2003.8.1
(PDNPTOC), and O-ethyl2,4-dinitrophenyldithiocarbonate (EDNPDTC) are studied kinetically in water, at 25.0 degrees C and an ionic strength of 0.2 M (KCl). All reactions show pseudo-first-order kinetics under an excess of phenol over the substrate, and are first order in phenoxide anion. The reactions of EDNPDTC show a linear Bronsted-type plot of slope beta = 0.67, suggesting a concerted mechanism. On the
Die vorliegende Erfindung betrifft neue 2,4,6-phenylsubstituierte cyclische Ketoenole der Formel (I), in welcher W, X, Y und CKE die oben angegebene Bedeutung haben, mehrere Verfahren zu ihrer Herstellung und ihre Verwendung als Schädlingsbekämpfungsmittel und/oder Herbizide. Ausserdem betrifft die Erfindung selektiv herbizide Mittel, die 2,4,6-phenylsubstituierte Ketoenole cyclische Ketoenole einerseits und eine die Kulturpflanzenverträglichkeit verbessernde Verbindung andererseits enthalten.
A convenient one-step procedure for the synthesis of ketene O,S- and ketene S,S-acetals via thioacylation of malononitrile
作者:N.H. Nilsson
DOI:10.1016/s0040-4020(01)97571-4
日期:1974.1
(XO) in the presence of two equivalents of sodium hydride followed by alkylation of the intermediate thiolate anion 3. In a similar manner a number of unsymmetrical ketene S,S-acetals were synthesised via thioacylation of 1 with chlorodithioformate esters 2 (XS). The reaction of the ketene O,S-acetals with secondary amines was investigated.
The present invention relates to novel aryl-substituted S(O)m cycles of the formula (I)
in which F1, F2, G, V, W, X, Y, Z and m are each as defined in the description, to processes for their preparation and to their use in agriculture, for example as crop protection agents (fungicides, herbicides and insecticides).
The invention relates to novel compounds of formula (I) in which A, B, W, G and Het have the same designation cited in the description. The invention also relates to several methods for the production of said new compounds and the use thereof as pesticides and herbicides.
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