WebAbstract 2-Aryl-1-oxaspiro(2,5)octa-4-ones Ia,b were synthesized and reacted with thiourea in ethanol to give hydroxy cyclohexanone derivatives IIa,b. Compounds IIa,b were readily cyclised into the corresponding 5-hydroxy quinazolines IIIa,b and their dehydrated derivatives IVa,b. A mixture of compounds III and IV were also prepared directly from the reaction of … WebNov 1, 2000 · Commercially available phosphorus pentasulfide has been widely employed in organic synthesis for effecting the conversion of carbonyl compounds to thiocarbonyl …

Synthesis method of phosphorus pentasulfide powder - PubChem

WebFeb 3, 2010 · Phosphorus pentasulfide has been subsequently used extensively for the conversion of carboxamides into thionoamides and a wide variety of examples have been … WebDec 19, 2014 · Researchers at the University of Texas at Austin, led by Prof. Arumugam Manthiram, have found that using phosphorus pentasulfide (P 2 S 5) as an electrolyte additive enables the direct use of commercially available bulk Li 2 S particles as high-capacity cathode materials for rechargeable Li−S batteries, without intricate synthesis or … st theresa specialty hospital

Phosphorus pentasulfide for synthesis, Sigma-Aldrich® - VWR

WebOct 1, 2004 · The reaction of carboxylic acids (1) with a variety of thiols or alcohols in the presence of phosphorus pentasulfide (P(4)S(10)) as a catalyst and reagent (20-40 mol %) … WebThe reaction involves thionation of the carbonyl groups followed by cyclization with loss of H2 S ( Table 5). Phosphorus pentasulfide is commonly used for this cyclization but … WebA simple, efficient, and new method has been developed for the synthesis of thioamides from nitriles. The reaction of a variety of aromatic and aliphatic nitriles in the presence of … st theresa tartar high school