ABSTRACT A facile and novel copper-catalyzed decarboxylative coupling of various arylpropiolic acids with readily available dialkyl hydrazinylphosphonates has been developed, providing an attractive synthetic tool for the synthesis of valuable alkynylphosphonates with operational simplicity and mild reaction conditions. GRAPHICAL ABSTRACT
An efficient synthesis of O,O- Di Propyl (E)-2-[1-methyl 2-oxopropylidene]phosphorohydrazidothiolate (E) Oxime and Its Analogues: A Potential Marine Toxin
作者:Arvind K. Gupta、D. K. Dubey、B. D. Parashar、M. P. Kaushik
DOI:10.1080/10426500701796249
日期:2008.7.4
An efficient method for the synthesis of Ptychodiscus brevis toxin O,O- di n-propyl (E)-2-[1-methyl 2-oxopropylidene]phosphorohydrazidothiolate (E) oxime (TG-1) and its analogues has been developed using thermally stable and recyclable silica gel and Na2SO4 as a condensing agent and water scavenger, respectively. The compounds were evaluated against fish Rasbora daniconius by determining the LC50 and LC90 values. The results of biological evaluation showed that these compounds have high degree of toxicity.
Solid-Liquid Phase-Transfer-Catalysed Phosphorylation of Hydrazine. Preparation of Dialkyl Phosphorohydrazidates and <i>N</i>,<i>N</i>′-Bis[dialkoxyphosphoryl]hydrazines
作者:Andrzej ZWIERZAK、Anna SULEWSKA
DOI:10.1055/s-1976-25385
日期:——
An Efficient One-Pot Synthesis of Some New Substituted 1,2,3,5-Thiatriazolidin-4-one 1,1-Dioxides
作者:Monaem Balti、Khaireddine Dridi、Mohamed Lotfi El Efrit
DOI:10.3987/com-14-12980
日期:——
A series of some new 1,2,3,5-thiatriazolidin-4-one 1,1-dioxides derivatives were synthesized by reacting respectively beta-cyanohydrazines and phosphorylated hydrazine with chlorosulfonyl isocyanate in good yields. The structures of all the newly prepared compounds were confirmed by IR, H-1, C-13, P-31-NMR spectral data and elemental analysis.
KONECNY V.; KOVAC S., CHEM. PAP., 40,(1986) N 5, 679-684