37486-72-9Relevant articles and documents
Unsaturated carboxylic acid ester preparation method
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Paragraph 0035-0039, (2019/11/04)
The invention relates to a synthesis method of a surfactant intermediate for tertiary oil recovery and displacement, wherein an alpha,beta-unsaturated carboxylic acid ester is generated through a Reformatsky reaction. The method comprises the following two steps: 1, dissolving octanal and ethyl haloacetate in an organic solvent to prepare a beta-hydroxy carboxylic acid ester; and 2, carrying out water bath heating on the prepared beta-hydroxy carboxylic acid ester under the catalysis of a catalyst to obtain a target product alpha,beta-unsaturated carboxylic acid ester. According to the presentinvention, by improving the solvent, the catalyst and other reaction conditions, the environmentally friendly alpha,beta-unsaturated carboxylic acid ester surfactant is achieved.
Facile synthesis of α, β-unsaturated esters through a one-pot copper-catalyzed aerobic oxidation-Wittig reaction
Ren, Cheng,Shi, Zhenyu,Ding, Weijie,Liu, Zhiqing,Jin, Huile,Yu, Xiaochun,Wang, Shun
supporting information, p. 14 - 17 (2017/12/06)
An efficient one-pot synthesis of α, β-unsaturated esters through the aerobic oxidation – Wittig tandem reaction of alcohols and phosphorous ylide is developed. This new method operates under mild reaction conditions, and uses CuI/TEMPO (TEMPO = 2,2,6,6-tetramethylpiperidine-N-oxyl) as co-catalyst and air (O2) as the oxidant. It tolerates a wide range of functionalized benzylic alcohol and aliphatic alcohols.
Dual [Fe+Phosphine] catalysis: Application in catalytic wittig olefination
Rommel, Susanne,Belger, Christian,Begouin, Jeanne-Marie,Plietker, Bernd
, p. 1292 - 1301 (2015/04/27)
Iron hydride complexes of the general formula P2Fe(NO)CO)H are highly active catalysts for the hydrosilylation of aldehydes or ketones and phosphine oxides. Depending on the solvent, the in situ reduction of the phosphine oxide can be faster than the corresponding hydrosilylation of a carbonyl group. This unusual activity was used within the context of catalytic Wittig olefination. Picture perfect: Iron hydride complexes of the general formula P2Fe(NO)CO)H are highly active catalysts for the hydrosilylation of aldehydes or ketones and phosphine oxides. Depending on the solvent, the in situ reduction of the phosphine oxide can be faster than the corresponding hydrosilylation of a carbonyl group. This unusual activity is used within the context of catalytic Wittig olefination. EWG=Electron-withdrawing group.