a series of new 2-(phenylthio) benzoylaryl hydrazones were synthesized by acid-catalyzed condensation of hydrazide 3 with corresponding aldehydes. the chemical structures of the compounds were elucidated by ft-ir, 1h-nmr and mass spectra. all newly synthesized compounds were evaluated for their antimycobacterial activities against mycobacterium tuberculosis h37rv using the microplate alamar blu...

The title compound, C(15)H(16)O(6), was prepared by reaction of 2,2-bis-(hydroxy-meth-yl)propane-1,3-diol with 2-furaldehyde in the presence of hydro-chloric acid at room temperature. The asymmetric unit contains two crystallographically independent mol-ecules. In these two mol-ecules, the dihedral angles between the five-membered rings are 56.4 (3) and 56.3 (3)°. The six-membered rings adopt c...

A photochemical route for the synthesis of some benzopyronospiropyrans from 2-furyl-3cycloalkenyloxybenzopyrones involving H-abstraction is reported. How a methyl group on the furyl ring affects the product formation is also investigated. 1. Background Spiropyrans exhibit photochromism due to the photoequilibrium with their open chain analogues merocyanins – a property that makes them a materia...

Syntheses of (1RS,2SR,6SR)-2-alkoxymethyl-, 2-hetaryl-, and 2-(hetarylmethyl)-7-arylmethyl-4,7-diaza-9-oxabicyclo[4.3.0]nonan-8-ones, of interest as potential muscarinic M1 receptor agonists, are described. A key step in the synthesis of (1RS,2SR,6SR)-7-benzyl-6-cyclobutyl-2-methoxymethyl-4,7-diaza-9-oxabicyclo[4.3.0]nonan-8-one, was the addition of isopropenylmagnesium bromide to 2-benzyloxyca...

Ruthenium catalysts for water oxidation combining multidentate ligands [2,2′:6′,2″-terpyridine]-6,6″-dicarboxylato (tda) and 2,2′-bipyridine-6,6′-dicarboxylato (bda) with apical phosphine have been prepared. These new complexes were fully characterized by standard spectroscopic single-crystal X-ray crystallography analyses, their redox properties evaluated electrochemistry. Specifically, [RuII(...