摘要:
The present invention relates to fields of organic chemistry and organometallic chemistry. The present invention discloses a chain multiyne compound, a preparation method thereof and an application in synthesizing a fused-ring metallacyclic compound. A structure of the chain multiyne compound in the present invention is shown as Formula I below. The present invention also provides a preparation method of the chain multiyne compound and an application thereof in a synthesis of a fused-ring metallacyclic compound. The chain multiyne compound disclosed in the present invention has multiple functional groups and the structure of the chain multiyne compound is adjustable. The chain multiyne compound can also be used to synthesize the fused-ring metallacyclic compound efficiently. The preparation method of the chain multiyne compound disclosed in the present invention is simple, which can be used to prepare the chain multiyne compound rapidly and efficiently.
摘要:
This invention relates to novel compounds with ester linkage(s) capped with either electron deficient olefinic linkage(s) or group(s) or reactive functional groups (termed herein as “active methylene reagents”), and curable compositions prepared therefrom.
摘要:
A process for cyanating an aldehyde is provided. The process comprises reacting the aldehyde with: i) a cyanide source which does not comprise a Si—CN bond or a C—(C═O)—CN moiety; and ii) a substrate susceptible to nucleophilic attack not comprising a halogen leaving group; in the presence of a chiral catalyst. Preferably, the chiral catalyst is a chiral vanadium or titanium catalyst. The cyanide source is preferably an alkali metal cyanide and the substrate susceptible to nucleophilic attack not comprising a halogen leaving group is a carboxylic anhydride.
摘要:
The present invention provides a process, which includes: preparing 3-alkoxyacrylonitrile from 3,3-dialkoxypropionitrile by catalytically eliminating alcohol from 3,3-dialkoxypropionitrile in the presence of at least one aromatic sulfonic acid catalyst and at least one high-boiling solvent. Another embodiment of the invention provides a method of producing a pharmaceutical compound, which includes the above-described process. Another embodiment of the invention provides a method of producing a cosmetic product, which includes the above-described process.
摘要:
A stabilization method of a vinyl compound with hydroxy group of an improved stability is achieved by preventing it from being denatured on storage, transportation, manufacturing process while maintaining its reactivity. A composition containing the vinyl compound with hydroxy group of an improved stability is obtained by the described stabilization method. The stabilization method is characterized by coexisting a vinyl compound with hydroxy group of formula (1), a primary antioxidant, alcohol and/or water, ##STR1## wherein R is a hydrogen atom or an organic residue, X is a --CN group, a --COR.sub.0 group or a --COOR.sub.0 group, and R.sub.0 is a hydrogen atom or an organic residue. In this stabilization method, not less than 50 ppm of alcohol and/or water is added with respect to the vinyl compound with hydroxy group. The stabilization method may be achieved by coexisting the above-defined vinyl compound with hydroxy group, the primary antioxidant and organic acid. In this case, not less than 10 ppm of organic acid is added to the vinyl compound with hydroxy group.
摘要:
This invention relates to novel electron deficient olefins, such as certain 2-cyanoacrylates and methylidene malonates, prepared using an imine or an iminium salt.
摘要:
A method for synthesis of secondary alcohols is provided for pharmaceutical secondary alcohol by addition of organoboronic acids with aldehydes in presence of the cobalt ion and bidentate ligands as the catalyst. In addition, an enantioselective synthesis method for secondary alcohols is also herein provided in the present invention. The present invention has advantages in using less expensive cobalt ion and commercially available chiral ligands as the catalyst, wide scope of organoboronic acids and aldehydes compatible with this catalytic reaction and achieving excellent yields and/or enantiomeric excess.
摘要:
A method of creating solvent extraction reagent formulations that have high conductivity by combining (a) phenolic oxime extraction reagent(s) or other extraction reagent(s) in the organic phase of a solvent extraction circuit of a metal recovery operation, comprising combining the phenolic oxime extraction reagent(s) or other reagent(s) with one or more ketone, nitrile and/or amide compounds, or mixtures thereof, to create an extraction reagent formulation with a conductivity of at least 4,000 pS/m, measured according to the provisions of BS 5958 Part I, as well as a method of creating an organic phase that has a high conductivity, preferably a conductivity of at least 250 pS/m, comprising adding to that organic phase in an extraction circuit a phenolic oxime extraction reagent formulation with one or more ketoxime, aldoxime, mixtures thereof, or one or more other extraction reagents, and one or more ketone, nitrile, or amide compounds, or mixture thereof, and novel ketone, nitrile and amide compounds.
摘要:
The present invention relates to a method for the preparation of 3-substituted-3′-hydroxypropionitrile, more particularly, to a method for the preparation of 3-substituted-3′-hydroxypropionitrile which comprises performing ring opening of 1-substituted-ethylene oxide using sodium cyanide and citric acid in a range of pH 7.8˜8.3 to provide 3-substituted-3′-hydroxypropionitrile in high optical purity and with high yield.
摘要:
A radical polymerizable compound comprising a structure represented by the following formula (I), (II) or (III): 1 wherein X3 represents a heterocyclic group that is connected through a hetero atom included therein; Q1 represents a group represented by CN or COX2; X2 represents a hydroxy group, a substituted oxy group, a substituted thio group, an amino group, a substituted amino group, a heterocyclic group that is connected through a hetero atom included therein or a halogen atom; X1 represents a substituted oxy group, a substituted amino group, a heterocyclic group that is connected through a hetero atom included therein or a halogen atom; Z1 and Z2 each represents a n-valent connecting group having at least 6 carbon atoms, in which the n's connecting parts are all hetero atoms; Ra and Rb, which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group or an organic residue; or Ra and Rb, X1 and Ra or Rb, X3 and Ra or Rb, or Q1 and Ra or Rb may combine with each other to form a cyclic structure; and n represents an integer of from 2 to 6.
摘要翻译:一种可自由基聚合的化合物,其包含由下式(I),(II)或(III)表示的结构:其中,X3表示通过其中包含的杂原子连接的杂环基; Q1表示由CN或COX2表示的基团; X 2表示羟基,取代的氧基,取代的硫基,氨基,取代的氨基,通过其中包含的杂原子连接的杂环基或卤素原子; X1表示取代的氧基,取代的氨基,通过其中包含的杂原子连接的杂环基或卤素原子; Z1和Z2各自表示具有至少6个碳原子的n价连接基团,其中n个连接部分都是杂原子; R a和R b可以相同或不同,表示氢原子,卤原子,氰基或有机残基; 或Ra和Rb,X1和Ra或Rb,X3和Ra或Rb,或Q1和Ra或Rb可以相互结合形成环状结构; n表示2〜6的整数。