As a part of our continuing work to improve the flame retardance of some chain-growth polymers, by employing a reactive route, we have synthesized several unsaturated compounds containing either phosphorus (P), or both phosphorus (P) and nitrogen (N), bearing groups in different chemical environments. They included: diethyl(acryloyloxymethyl)phosphonate (DEAMP); diethyl(1-acryloyloxyethyl)phosp...

Abstract. The Ti(OiPr)4/tartaric acid diethyl ester/t-BuOOH complex (Sharpless catalyst) was successfully used for the direct asymmetric oxidation of ketones resulting in lactones from cyclobutanones; α,β-dihydroxy ketones from β-hydroxy ketones; alkyl lactone carboxylic acids from 3-alkylcyclopentane-1,2-diones; and spiro-γ-dilactone from 3-(2-hydroxyethyl)cyclopentane1,2-dione in high enantio...

Three bench-stable difluoromethylene phosphonate hydrazones were prepared from simple diethyl(difluoromethyl)phosphonate within two steps in good yields. The [3 + 2] cycloaddition reaction of these diazo precursors with aryl diazonium salts has been accomplished under metal-free conditions exclusive regioselectivity. This transformation provides practical access to a broad panel 2-aryl-2 H -tet...

In the title compound, C(29)H(27)NO(6)S, the sulfonyl-bound phenyl ring is almost perpendicular to the indole ring system [dihedral angle = 87.96 (6)°], while the benzyl-phenyl ring is oriented at an angle of 76.8 (7)°. An intra-molecular C-H⋯O hydrogen bond is observed. In the crystal structure, mol-ecules are linked into a zigzag C(10) chain along the b axis by inter-molecular C-H⋯O hydrogen ...

This work was done to evaluate the effect of ethanolic extract Palisota hirsuta on nephrotoxicity induced by carbontetrachloride (CCl4). Biochemical analyses were carried out determine levels creatinine, urea, total protein, chloride, carbonate using assay kits (products Randox Laboratories Crumlin and Teco Diagnostics), sodium, potassium (method Tietz,) malondialdelyde (MDA) level (thiobarbitu...