596-75-8Relevant articles and documents
Method for preparing Guerbet acids by taking malonate as raw material
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Paragraph 0024, (2017/08/29)
The invention discloses a method for preparing Guerbet acids by taking malonate as a raw material. The method comprises the following steps: using the malonate as the raw material, and carrying out alkylation reaction under the action of alkali to obtain dialkyl malonate; sequentially carrying out hydrolysis reaction and decarboxylic reaction on obtained dialkyl malonate to obtain the Guerbet acid, wherein the malonate is dimethyl malonate or diethyl malonate; the alkali of the alkylation reaction is selected from one or more of potassium carbonate, sodium hydroxide, potassium hydroxide, sodium methylate and sodium ethoxide; an alkylating reagent is haloalkane with 2 to 20 carbons. According to the method disclosed by the invention, the Guerbet acids are prepared by taking the malonate as the raw material for the first time; related three reactions are easily operated, high temperature or high pressure is not needed, and high yield is realized; by means of the alkylation reaction disclosed by the invention, a main chain structure and a branched chain structure of the Guerbet acids can be flexibly regulated and controlled, and further the Guerbet acids with different properties are obtained.
Synthesis of 3-alkyl(aryl)thietanes
Shevchenko,Volynskii
body text, p. 123 - 128 (2010/02/28)
A preparative procedure for the synthesis of thietanes bearing alkyl substituents in the β-position was developed. Using this procedure, 3-substituted thietanes can be obtained in four steps with an ultimate yield of > 50%. 3-R-thietanes (where R = CH3, C4H9, C5H11, C6H13, C6H 5) and the corresponding sulfoxides and sulfones were synthesized and examined. The feasibility of preparation of gem-3,3-substituted thietanes was exemplified by the synthesis of 3,3-dihexylthietane.
Role of Substituents in Copper(II) Extraction with N,N'-Bis(8-quinolyl)malonamides
Hirose, Takuji,Hiratani, Kazuhisa,Kasuga, Kazuyuki,Saito, Kiyoshi,Koike, Tohru,et al.
, p. 2679 - 2684 (2007/10/02)
It has been found that substituents on N,N'-bis (8-quinolyl)malonamide play an important role in copper(II) extraction: among the substituents studied, benzyl groups dramatically increased extractability of the malonamide complex.The role of substituents is discussed on the basis of the results of titration and 1H NMR measurements of copper(II) or nickel(II) complexes as well as copper(II)-extraction experiments.Intramolecular interactions between ? electrons of the benzyl group and the metal centre of the complex are proposed to occur.
