Synthesis of Fluoro- and Perfluoroalkyl Arenes via Palladium-Catalyzed [4 + 2] Benzannulation Reaction
作者:Olga V. Zatolochnaya、Vladimir Gevorgyan
DOI:10.1021/ol401057z
日期:2013.5.17
Pd-catalyzed [4 + 2] cross-benzannulation is presented. The synthetic utility of these products for the synthesis of various aromatic and heteroaromatic compounds is also demonstrated. This strategy offers a viable and quite general alternative to existing fluorination and perfluoroalkylation methods for securing these valuable molecules.
Practical Synthesis of
<i>α</i>
‐Trifluoromethylated Pyridines Based on Regioselective Cobalt‐Catalyzed [2+2+2] Cycloaddition using Trifluoromethylated Diynes with Nitriles
作者:Tatsuya Kumon、Shigeyuki Yamada、Tomohiro Agou、Hiroki Fukumoto、Toshio Kubota、Gerald B. Hammond、Tsutomu Konno
DOI:10.1002/adsc.202001433
日期:2021.3.29
Regioselective cobalt‐catalyzed [2+2+2] cycloaddition using fluorine‐containing diynes with nitriles was described. Cycloaddition of fluorinated diynes with nitriles under the influence of CoCl2(phen), zinc bromide, and zinc dust in dichloroethane at 80 °C for 3 h took place smoothly, exclusively affording the corresponding α‐fluoroalkylated pyridines in excellent yields. In addition, dinitriles as
描述了使用含氟二炔与腈进行区域选择性钴催化的[2+2+2]环加成反应。在 CoCl 2 (phen)、溴化锌和锌粉的影响下,氟化二炔与腈在二氯乙烷中在 80 °C 下环加成 3 小时,顺利进行,以优异的收率专门提供了相应的α-氟烷基化吡啶。此外,二腈作为底物也被发现适合该反应,以优异的收率得到相应的氟烷基化联吡啶衍生物。
Methods for making foams using blowing agents comprising unsaturated fluorocarbons
申请人:Creazzo Anthony Joseph
公开号:US20070100009A1
公开(公告)日:2007-05-03
Disclosed herein are blowing agents comprising fluorocarbons and/or hydrofluorocarbons useful in foamable compositions. Also disclosed are methods for forming a foam comprising the aforementioned blowing agents.
Blowing agents for forming foam comprising unsaturated fluorocarbons
申请人:Creazzo Anthony Joseph
公开号:US20070100010A1
公开(公告)日:2007-05-03
Disclosed herein are blowing agents comprising fluorocarbons and/or hydrofluorocarbons useful in foamable compositions. Also disclosed are methods for forming a foam comprising the aforementioned blowing agents.
This invention relates to cleaning compositions comprising unsaturated fluorinated hydrocarbons. The invention further relates to use of said cleaning compositions in methods to clean, degrease, deflux, dewater, and deposit fluorolubricant. The invention further relates to novel unsaturated fluorinated hydrocarbons and their use as cleaning compositions and in the methods listed above.