- Preparation method of alkyl nitrile compound
-
The invention discloses a preparation method of an alkyl nitrile compound. Specifically, the preparation method comprises the following step: in an organic solvent, in the presence of a protective gasand under the action of a catalyst, carrying out a reduction reaction as shown in the specification on olefin as shown in a formula I, a cyanation reagent and water, wherein the alkyl nitrile compound 1 is a compound II and/or a compound III. The preparation method provided by the invention is mild in condition, can realize hydrocyanation of olefin more safely and efficiently, and has good substrate universality and functional group compatibility.
- -
-
Paragraph 0214-0216
(2020/08/18)
-
- Formation of linear copolymers of ethylene and acrylonitrile catalyzed by phosphine sulfonate palladium complexes
-
Linear copolymers of ethylene and acrylonitrile were prepared using palladium complexes bearing phosphine-sulfonate bidentate ligands. Acrylonitrile units located in the linear polyethylene backbones were detected for the first time by 13C NMR spectroscopy. Catalyst systems employing isolated palladium complexes such as 3 showed much higher activity for the copolymerization than the in situ generation procedures, and molecular weight of the copolymers and acrylonitrile incorporation were dependent on the palladium complexes. Obtained linear copolymers of ethylene and acrylonitrile melt at higher temperature than branched copolymers. Copyright
- Kochi, Takuya,Noda, Shusuke,Yoshimura, Kenji,Nozaki, Kyoko
-
p. 8948 - 8949
(2008/02/09)
-
- Ketone precursors for organoleptic compounds
-
The invention discloses ketones of formula I: wherein, Y is an optionally substituted alkyl, cycloalkyl, or cycloalkylalkyl, wherein each alkyl group is straight or branched and each alkyl and cycloalkyl group is saturated or unsaturated; R1is hydrogen or a C1-6alkyl group that is substituted, saturated or unsaturated, straight or branched; A is a chromophoric substituted aromatic ring or ring system; n is an integer; and with the proviso that formula I is not 2-ethoxy-1-phenyl-ethanone. These compositions are useful for the delivery of organoleptic compounds, especially of flavors, fragrances, masking agents and antimicrobial compounds.
- -
-
-
- Methylation of organic compounds
-
Methyl compounds are prepared from carbon acids by reaction with dimethyl carbonate in the presence of a nitrogen-containing base.
- -
-
-
- Hydrocyanation of α,ω-Diynes Catalyzed by Tetracyanonickelate. Regiospecific Synthesis of a New Series of Acyclic Dinitriles
-
Hydrocyanation of α,ω-diynes without the use of HCN has been described.Cyanonickelate, prepared by reducing 2- with NaBH4 or Zn in the presence of excess KCN in water or ethylene glycol, catalyzes hydrocyanation of α,ω-diynes, HCC(CH2)nCCH to give quantitatively CH3CH(CN)(CH2)nCH(CN)CH3, a new series of acyclic dinitriles.Importance of the preliminary formation of a (?-acetylene)nickel(0) complex for the hydrocyanation has been suggested.
- Funabiki, Takuzo,Sato, Yoshihiro,Yoshida, Satohiro
-
p. 2863 - 2864
(2007/10/02)
-