Molecular dynamics simulations and fluorescence anisotropy decay measurements are used to investigate the rotational diffusion of anthracene in two organic solvents—cyclohexane and 2-propanol—at several temperatures. Molecular dynamics simulations of 1 ns length were performed for anthracene in cyclohexane ~at 280, 296, and 310 K! and in 2-propanol ~at 296 K!. The calculated time constants for ...

A difluorinated dienophile underwent cycloaddition reactions with a range of furans to afford cycloadducts which could be processed regio- and stereoselectively via episulfonium ions, generated by the reaction between their alkenyl groups and phenylsulfenyl chloride. The oxabicyclic products were oxidised to the phenylsulfonyl level and ring opened via E1(C)B or reductive desulfonative pathways...

We demonstrate the first all-fiber Raman probe utilizing higher order modes for the excitation. The spectrum of cyclohexane is measured using both the fundamental mode as well as in-fiber-generated Bessel-like modes. © 2013 Optical Society of America OCIS codes: 060.2370, 060.4370.

The all-syn isomer of 1,2,4,5-tetrafluorocyclohexane is prepared and characterised by NMR and X-ray crystallography. It emerges to be a particularly polar cyclohexane analogue with differentially polarised faces.

BACKGROUND Several thiocholine alkanoyl esters were newly synthesized and explored as substrates for the assay of human serum cholinesterase after being subjected to the Ellman reaction (Arch Biochem Biophys 1958;74:443-50 and Arch Biochem Biophys 1959;82:70-7). METHODS We synthesized thiocholine ester iodides by the method of Renshow et al. (J Am Chem Soc 1938;60:1765-70). We examined solubi...

Two bipolar molecules CzT2.1 and CzT2.2 are examined as electron acceptors to form exciplexes with donors 1,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC) 4,4′,4′′-tris(carbazol-9-yl)-triphenylamine (TCTA), respectively.

The efficient depolymerization and hydrodeoxygenation of enzymatic hydrolysis lignin are achieved in cyclohexane solvents over a gamma-alumina supported nickel molybdenum alloy catalyst single step. Under initial 3 MPa hydrogen at 320 °C, the highest overall cycloalkane yield 104.4 mg/g with 44.4 wt% selectivity ethyl-cyclohexane was obtained. reaction atmosphere temperature have significant ef...