Um grande número de reações de formação de ligações carbono-carbono (tais como: acoplamentos de Heck, Suzuki, Stille, Negishi e Sonogashira, entre outros) é facilitado pela catálise com compostos de paládio. Neste artigo de revisão, apresentamos uma visão detalhada e compreensiva da literatura sobre a versatilidade do uso de líquidos iônicos em conjunto com paládio em vários tipos de reações.A number of carbon-carbon bond forming reactions in organic chemistry (such as the Heck, Suzuki, Stille, Negishi, Sonogashira coupling etc) are facilitated by catalysis with palladium compounds. An attempt has been made to present a detailed and comprehensive literature collection about the versatility of ionic liquid in conjunction with palladium for various types of reactions.

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in Wiley InterScience (www.interscience.wiley.com).1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) efficiently catalyzes three-component one-pot condensations of aldehyde, malononitrile, and thiophenol to produce highly functionalized pyridines in excellent yield in aqueous ethanol.

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Parthenium hysterophorus (Linn.) is violent every where annual, herbivorous weed, commonly found in America but presently invaded in four continents. It shows hazardous effect on human health, livestock as well as it reduces the crop production due to its allelopathic effect. Partheniun with other constituents discussed are the cause behind the intimidating role of this weed. Inspite of these drawbacks the weed is traditionally known for the treatment of wounds, fever, ulcerated sores and malaria. It can also be used to increase the agricultural productivity and for the elimination of heavy metals from soil as well as from water to reduce pollution. The main aim of this review article is to summarise the main positive and negative effects of the Parthenium hysterophorus.

The trifluoromethyl group is found in a variety of pharmaceuticals, agrochemicals, and functional organic compounds due to its ability to improve properties like electronegativity, hydrophobicity, metabolic stability, binding selectivity, and bioavailability. As a result, the development of innovative techniques for the incorporation of trifluoromethyl group has long been a research focus. Various metals such as Cu, Mg, Ni, Ag, Fe, and V were found to act as lewis acid in the synthesis of different trifluoromethylated compounds. In this review, the recent development of metal-catalyzed trifluoromethylation of C-C, C-N, C-O multiple/single bonds using hypervalent iodine reagent is described.

Organic chemistry Z 0200Ionic Liquids -A Versatile Medium for Palladium-Catalyzed Reactions -[203 refs.]. -(SINGH, R.; SHARMA, M.; MAMGAIN, R.; RAWAT, D. S.; J. Braz.

Activity. -None of the new title compounds (IV) and (VI) show any significant antimalarial activity, but they are found to be non cytotoxic indicating their safety in the mammalian system. -(MAMGAIN, R.; ATHEAYA, H.; KHAN, S. I.; MANOHAR, S.; RAWAT*, D. S.; J. Indian Chem.