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.
Molecular Ribbons from Molecular Recognition directed Self-assembly of Self-complementary Molecular Components
Lehn, Jean-Marie,Mascal, Mark,DeCian, Andre,Fischer, Jean
, p. 461 - 468 (2007/10/02)
The programmed self-association of the self-complementary nucleotide-like pyrimidinone 5 and pyrimidinedione 6, generates, as predicted, organized supramolecular ribbons.The crystal structure of such a species has been determined.A similar entity is obtained from the pyrimidinetriamine 12 with solvent participation, giving a quadruply hydrogen-bonded ribbon, whose crystal structure has also been determined.These processes give access to the designed generation of organized arrays of functional substituents.