6230-73-5Relevant articles and documents
Br?nsted Base-Catalyzed Transformation of α,β-Epoxyketones Utilizing [1,2]-Phospha-Brook Rearrangement for the Synthesis of Allylic Alcohols Having a Tetrasubstituted Alkene Moiety
Kondoh, Azusa,Tasato, Naoko,Aoki, Takuma,Terada, Masahiro
supporting information, p. 5170 - 5175 (2020/07/04)
A stereoselective transformation of α,β-epoxyketones into alkenylphosphates having a hydroxymethyl group on the β-carbon was established by utilizing the [1,2]-phospha-Brook rearrangement under Br?nsted base catalysis. The reaction involves the catalytic generation of an α-oxygenated carbanion located at the α-position of an epoxide moiety through the [1,2]-phospha-Brook rearrangement and the following epoxide opening. Further transformation of the alkenylphosphates by the palladium-catalyzed cross-coupling reaction with Grignard reagents provided allylic alcohols having a stereodefined all-carbon tetrasubstituted alkene moiety.
Method for synthesizing alpha,beta-unsaturated ketone compounds from dimethyl sulfoxide and ketone compounds
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Paragraph 0131-0133; 0140-0143, (2018/03/24)
The invention discloses a method for synthesizing alpha,beta-unsaturated ketone compounds from dimethyl sulfoxide and ketone compounds. According to the method, dimethyl sulfoxide and ketone compoundsare subjected to a one-pot reaction in the presence of carboxylate and persulfate so as to produce the alpha,beta-unsaturated ketone compounds. The method uses dimethyl sulfoxide as a methylenation reagent and employs a one-pot process for high-selectivity high-yield synthesis of the alpha,beta-unsaturated ketone compounds from the ketone compounds; and the method is simple to operate, low in cost, friendly to environment and beneficial for industrial production.
A methylene compound of preparation method and its application (by machine translation)
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Paragraph 0023-0024; 0031-0032; 0059-0060, (2017/11/16)
The invention discloses a methylene compound of preparation method and its application, relates to the field of organic synthesis, the process comprises: 1) in the presence of a three-valent metal salt catalyst, will arone compound and halogen methyl radical trialkyl ammonium salt dissolved in a solvent, 2) 80 - 130 °C reaction 1 - 4 hours, separated and purified α - the methyl radical is fragrant compounds, the reaction environment pollution is small, substrate and wide range of application. (by machine translation)