Ceric ammonium nitrate catalyzes the reaction between aromatic or aliphatic primary amines and a variety of β-dicarbonyl compounds, including β-ketoesters, β-ketothioesters and β-diketones. The reaction proceeds smoothly at room temperature in short reaction times and gives β-enaminones in good to excellent yields.
PYRAZOLE SYNTHESIS BY COUPLING OF CARBOXYLIC ACID DERIVATIVES AND ENAMINES
申请人:Neumann Julia
公开号:US20130012715A1
公开(公告)日:2013-01-10
The invention describes a novel process for synthesizing pyrazoles by means of oxidative conversion of enamines with suitable N-containing carboxylic acid derivatives.
这项发明描述了一种通过氧化转化烯胺和适当的含氮羧酸衍生物合成吡唑的新方法。
METAL COMPLEX COMPOUND AND PREPARING METHOD AND USAGE THEREOF
申请人:National Changhua University of Education
公开号:US20190241592A1
公开(公告)日:2019-08-08
A compound of formula (I) includes any forms of tautomer or stereoisomer thereof, wherein the formula (I) is presented as:
wherein the definitions of X, R1, and R2 are as specified in the specification hereof. The preparing method and the usage in cancer treatment of such compound are also provided by the present invention.
Metal complex compound and preparing method and usage thereof
申请人:National Changhua University of Education
公开号:US10544178B2
公开(公告)日:2020-01-28
A compound of formula (I) includes any forms of tautomer or stereoisomer thereof, wherein the formula (I) is presented as:
wherein the definitions of X, R1, and R2 are as specified in the specification hereof. The preparing method and the usage in cancer treatment of such compound are also provided by the present invention.
Non-toxic corrosion-protection pigments based on manganese
申请人:——
公开号:US20040011252A1
公开(公告)日:2004-01-22
Corrosion-inhibiting pigments based on manganese are described that contain a trivalent or tetravalent manganese/valence stabilizer complex. An inorganic or organic material is used to stabilize the trivalent or tetravalent manganese ion to form a compound that is sparingly soluble, exhibits low solubility, or is insoluble in water, depending upon the intended usage. Specific stabilizers are chosen to control the release rate of trivalent or tetravalent manganese during exposure to water and to tailor the compatibility of the powder when used as a pigment in a chosen binder system. Stabilizers may also modify the processing and handling characteristics of the formed powders. Manganese/valence stabilizer combinations are chosen based on the well-founded principles of manganese coordination chemistry. Many manganese-valence stabilizer combinations are presented that can equal the performance of conventional hexavalent chromium or tetravalent lead systems. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.