Sur les dérivés de la fluorénone. IX. La (pyridyl-2)-3-fluorénone,la méthyl-2-(pyridyl-2)-3-fluorénone et la méthyl-3-(pyridyl-2)-3-fluorénone

Fluorenone Derivatives. IX. 3-(Pyrid-2-yl)-fluorenone, 2-methyl-3-(pyrid-2-yl)-fluorenone, and 2-(3-methyl-pyrid-2-yl)fluorenone Unsuccessful attempts to synthesize an aza-cis-fluorenacene system starting from 2-aza-chalcone or 6-methyl-2-aza-chalcone led to the title compounds.     

1-丁腈-3-甲基咪唑双三氟甲基磺酸亚胺的性质

制备了功能化离子液体1-丁腈-3-甲基咪唑双三氟甲基磺酸亚胺。在T为283.15-353.15 K温度范围内,测定了该功能化离子液体的密度、动力粘度、电导率及折光率。讨论了亚甲基的增减对该类功能化离子液体的密度、动力粘度、电导率及折光率等性质的影响,并与传统咪唑类、吡啶类离子液体物理化学性质的变化趋势进行了对比。通过经验方程计算了该功能化离子液体的热膨胀系数、分子体积、标准摩尔熵及晶格能等热力学性质参数。讨论了Vogel-Fulcher-Tamman (VFT)方程和Arrhenius方程的适用性,得出VFT方程适用于该功能化离子液体,而Arrhenius方程并不适用。有关研究对新型离子液体的合成及其工业化的应用具有十分重要的意义。     

Isomerès optiques du naftidrofuryl ( = 2-[(naphth-1-yl)méthyl]-3-(tétrahydrofur-2-yl)propanoate de 2-(diéthylamino) éthyle)

Optical Isomers of Naftidrofuryl( = 2-(Diethylamino)ethyl 2-[(Naphth-1-yl)methyl]-3-(tetrahydrofur-2-yl)propanoate) The four optical isomers of naftidrofuryl ( 1 ) were prepared in two ways, by separation and resolution of the two diastereoisomeric racemates and by synthesis from the enantiomers of tetrahydrofuran-2-methanol ( 6 ); see Scheme}. The absolute configuration of one of the isomer as a tartrate monohydrate was established by X-ray crystallography thus allowing the deduction of the absolute configurations of the other three optical isomers.     

Structures électroniques du fluorocyclohexane et du gem-difluorocyclohexane

CNDO/2 calculations were performed on cyclohexane, cyclohexyl fluoride and 1,1-difluorocyclohexane. The electronic structure is discussed and compared with experimental data.     

Synthesis of 1-(arylsulfonyl)pyrrolidines from phenols and 1-[(4-chlorophenyl)sulfonyl]-2-ethoxypyrrolidine

Acid-catalyzed reaction of 1-[(4-chlorophenyl)sulfonyl]-2-ethoxypyrrolidine with phenols leads to the formation of new 1-(arylsulfonyl)pyrrolidines. The reaction proceeds under mild conditions and may be used as a convenient method for the synthesis of pyrrolidine-1-sulfonylarene derivatives containing a phenol fragment in the position 2.     

2-[(4-羟基苯基)砜基]苯酚的合成及其精制新工艺

2-[(4-羟基苯基)砜基]苯酚的合成及其精制新工艺; [(羟基苯基)砜基]苯酚;苯酚;亚磷酸;偏三甲苯     

Copper(II) [(4-methylphenyl)sulfonyl]-1H-imino-(2-phenyl-2-oxazoline) complexes

Neutral copper complexes of the deprotonated [(4-methylphenyl)sulfonyl]-1H-imino-(2-phenyl-2-oxazoline) proligands, [HTs-ROz], R = H, 5-Me, 4-Me, 4-Et, 4-ⁱPr, have been prepared by electrochemical oxidation of anodic copper in an MeCN solution of the corresponding proligand. The [Cu(Ts-ROz)₂] complexes were characterised by microanalysis, i.r. and electronic spectroscopies, and by e.p.r. and magnetic measurements. The crystal structures of HTs-5MeOz, [Cu(Ts-Oz)₂], [Cu(Ts-5MeOz)₂] and [Cu(Ts-4MeOz)₂] were determined by X-ray diffraction.