Addition reactions of F-alkyl iodides to carbon-carbon double bonds promoted by metallic tin(0)-metal salt systems
作者:Manabu Kuroboshi、Takashi Ishihara
DOI:10.1016/s0022-1139(00)82786-4
日期:1988.5
-alkyl iodides readily reacted with a variety of alkenes in methanol at room temperature under the influence of metallic tin(0)-silver(I) acetate of metallic tin(0)-copper(I) chloride to afford the corresponding addition products, - alkylated iodides, in good to excellent yields. This addition reaction was also promoted by the use of a metallic tin(0)- aluminium(0) reagent, though gentle heating was
perfluoroalkylation of organic compounds is reported. This operationally simple approach occurs under mild conditions producing valuable new C-C bonds. The chemistry is driven by the ability of NCNDs to directly reach an electronically excited state upon light absorption, thereby successively triggering the formation of reactive radical species from simple perfluoroalkyliodides. Preliminary mechanistic
报道了使用富含胺的 N 掺杂碳纳米点 (NCND) 进行有机化合物的光化学自由基全氟烷基化。这种操作简单的方法发生在温和的条件下,产生有价值的新 CC 债券。这种化学反应是由 NCND 在吸收光后直接达到电子激发态的能力驱动的,从而连续触发从简单的全氟烷基碘化物形成反应性自由基物种。还报告了初步的机理研究。
Partially fluorinated liquid crystal material
申请人:——
公开号:US20030017278A1
公开(公告)日:2003-01-23
The invention provides LC compositions that exhibit V-shaped switching when aligned in an analog device configuration and exhibit bistability when aligned in a bookshelf-type device configuration. The invention more specifically provides LC compositions of formula 1 and particularly chiral nonracemic compounds of formula 1 which exhibit bistable switching as well as V-shaped switching when aligned in appropriate device configurations. The invention also provides methods of using the compounds of the invention in making LC compositions and electooptical devices comprising an aligned layer of the compositions of this invention.
Fluorinated phosphonic acid compounds, useful as treatments for substrate surfaces, have the formula (I) : wherein: R1 is a straight chain alkylene group having from 3 to 21 carbon atoms, an oxa-substituted straight chain alkylene group having from 2 to 20 carbon atoms, or a thia-substituted straight chain alkylene group having from 2 to 20 carbon atoms; R2 is a perfluoroalkyl group having from 4 to 10 carbon atoms; R3 is hydrogen, an alkali metal cation, or an alkyl group having from 1 to 6 carbon atoms; and M is hydrogen or an alkali metal cation, with the proviso that if R1 is an unsubstituted straight chain alkylene group, then the sum of carbon atoms in R1 and R2 combined is at least 10.
METHOD FOR PREPARING FLUORINATED BENZOTRIAZOLE COMPOUNDS
申请人:BOARDMAN Larry D.
公开号:US20080114177A1
公开(公告)日:2008-05-15
Fluorinated benzotriazole compounds may be prepared by contacting a fluorochemical monofunctional compound, such a fluorinated alcohol, with a carboxybenzotriazole in the presence of a coupling agent, and an optional amine catalyst.