Preparation of Di- and polynitrates by ring-opening nitration of epoxides by dinitrogen pentoxide (N2O5)
作者:Peter Golding、Ross W Millar、Norman C Paul、David H Richards
DOI:10.1016/s0040-4020(01)87978-3
日期:1993.8
hydrocarbon solvents (principally CH2Cl2) to give vicinal nitrate ester products by a novel ring-opening nitrationreaction. The procedure offers easier temperature control and simpler isolation procedures compared with conventional mixed acid nitrations; it also enables selective nitrationreactions to be carried out on polyfunctional substrates. The scope and limitations of the reaction, as well as
通过新颖的开环硝化反应,使十八种各种环氧化合物与N 2 O 5在氯化烃溶剂(主要为CH 2 Cl 2)中反应,得到邻位硝酸酯产物。与传统的混合酸硝化方法相比,该方法提供了更轻松的温度控制和更简单的分离步骤。它还可以在多官能底物上进行选择性硝化反应。讨论了反应的范围和局限性,以及利用N 2 O 4与硝酸亚硝酸酯原位进行原位氧化的替代方法的范围和局限性。
A Cu-Doped ZIF-8 metal organic framework as a heterogeneous solid catalyst for aerobic oxidation of benzylic hydrocarbons
Mixed-metal metalorganicframeworks have received considerable attention in recent years and it has been shown that the activity of the parent metalorganicframework (MOF) is often enhanced upon doping with external metal ions within the framework. In this context, Cu2+ ions with different loadings were incorporated within the ZIF-8 framework to obtain a series of Cu-doped ZIF-8 materials and their
[EN] METHODS FOR PREPARING FLUOROALKYL ARYLSULFINYL COMPOUNDS AND FLUORINATED COMPOUNDS THERETO<br/>[FR] PROCÉDÉS DE PRÉPARATION DE COMPOSÉS FLUOROALKYLE ARYLSULFINYLÉS ET COMPOSÉS FLUORÉS APPARENTÉS
申请人:IM & T RES INC
公开号:WO2010022001A1
公开(公告)日:2010-02-25
Novel preparative methods for fluoroalkyl arylsulfinyl compounds are disclosed. Fluorinated compounds as useful fluorinated compounds, intermediates, or builing blocks are disclosed. Useful applications of the fluoroalkyl arylsulfinyl compounds are shown.
Molecular addition compounds. 14. Convenient preparations of representative dialkylborane reagents using the new, highly reactive N-ethyl-N-isopropylaninine-borane reagent (BACH-EI™)
作者:Herbert C. Brown、Josyula V.B. Kanth、Marek Zaidlewicz
DOI:10.1016/s0040-4020(99)00272-0
日期:1999.5
Convenient procedures for the preparation of representative dialkylborane reagents, diisopinocampheylborane, [1S]-2-diisocaranylborane, 9-borabicyclo[3,3,1]nonane, dicyclohexylborane and disiamylborane, using the new, highly reactive N-ethyl-N-isopropylaniline-borane reagent (BACH-EI™) in dioxane and tetrahydrofuran are described.
A process for preparing N-alkenyl-amides by reacting the corresponding NH-amides with acetylenes in the liquid phase in the presence of basic alkali metal compounds and of a cocatalyst comprises using as the cocatalyst diols of the general formula (I)
1
where X
is branched or unbranched alkylene selected from the group consisting of
2
where R
1
to R
6
are independently hydrogen or C
1
- to C
4
-alkyl;
or
branched or unbranched cyclic alkylene of 3 to 14 carbon atoms including 3 to 12 ring carbon atoms,
their monoalkenyl ethers, their dialkenyl ethers or mixtures thereof.