This invention relates to fodder compositions, particularly feed additives, premixes and ready-for-use fodders, and a method for increasing weight-gain and improving fodder utilization of dimestic animals. The compositions according to the invention comprise as active ingredient a compound of the general formula (I), ##STR1## wherein R.sup.1 represents methoxy or hydrogen and R stands for methyl; or R and R.sup.1 each denotes hydrogen; or R.sup.1 stands for hydrogen and R represents ethyl. The compounds of the general formula (I) known from the literature exhibit useful weight-gain increasing and fodder-utilization improving effects and can be used in animal husbandry.
Synthesis of 3‐Unsubstituted Phthalides from Aryl Amides and Paraformaldehyde via Ruthenium(II)‐Catalyzed C–H Activation
作者:Chao Zhou、Junqi Zhao、Wenkun Chen、Mukhtar Imerhasan、Jun Wang
DOI:10.1002/ejoc.202001160
日期:2020.11.8
A straightforward and convenient route has been developed for the synthesis of 3‐unsubstituted phthalide derivatives from aryl amides and paraformaldehyde by ruthenium(II)‐catalyzedC–Hactivation. The reaction proceeds through tandem ortho‐hydroxymethylation of aryl amide and subsequent intramolecular lactonization.
Syntheses of 4-Substituted 2-(Trichloromethyl)quinazolines under Mild Conditions by Benzyne [4+2] Cycloaddition
作者:Harim Lechuga-Eduardo、Horacio F. Olivo、Moises Romero-Ortega
DOI:10.1002/ejoc.201402706
日期:2014.9
An experimentally simple and convenient synthesis of 4-susbstituted 2-(trichloromethyl)quinazolines by cycloaddition of benzyne with 2-(trichloromethyl)-1,3-diazabutadienes was developed. The 2-(trichloromethyl)-1,3-diazabutadienes (R1 = H and Me) were prepared from trichloroacetamidine and the appropriate N,N-dimethylamide dimethyl acetal or from trichloroacetamidine and a Vilsmeier–Haack reagent
Electrochemical Deoxygenation of Aromatic Amides and Sulfoxides
作者:Carolin Edinger、Siegfried R. Waldvogel
DOI:10.1002/ejoc.201402714
日期:2014.8
The electrochemicaldeoxygenation of a broad range of aromaticamides was achieved under mild conditions on lead cathodes. Under the optimized reaction conditions, acetal, thienyl, and ether moieties are tolerated. Furthermore, the reduction protocol can be applied to aromatic and aliphatic sulfoxides to obtain the corresponding sulfides. For both aromaticamides and sulfoxides, the deoxygenation reaction
The synthesis, characterization and antimicrobialevaluation of a new series of veratric acid derivatives are presented. Preliminary in vitro antimicrobial activity of the title compounds was assessed against a panel of microorganisms including Gram-positive and Gram-negative bacteria and fungi. Some of the veratric acid derivatives exhibited significant in vitro antimicrobial activity. QSAR investigation