2028-63-9Relevant articles and documents
Method for synthesizing 3 -butyne -2 - alcohol with high yield
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Paragraph 0033-0049, (2021/11/27)
The invention discloses a method for synthesizing 3 -butyne -2 - alcohol, wherein tripolyacetaldehyde is used as a raw material acetaldehyde source, and potassium hydroxide or potassium tert-butoxide or potassium tert-butoxide is used as a dispersant. After the reaction endpoint material is hydrolyzed to remove potassium hydroxide, the target product 3 - butyne -2 - alcohol is separated by aqueous phase extraction. The method has the advantages of low acetylene reaction pressure. Target product yield is high.
Copper-Catalyzed Highly Enantioselective Difluoroalkylation of Secondary Propargyl Sulfonates with Difluoroenoxysilanes
Gao, Xing,Cheng, Ran,Xiao, Yu-Lan,Wan, Xiao-Long,Zhang, Xingang
supporting information, p. 2987 - 2999 (2019/11/14)
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Gold(I)-catalyzed decarboxylation of propargyl carbonates: Reactivity reversal of the gold catalyst from π-Lewis acidity to σ-Lewis acidity
Shen, Ruwei,Yang, Jianjun,Zhu, Shugao,Chen, Chao,Wu, Luling
supporting information, p. 1259 - 1269 (2015/04/22)
A cationic gold(I)-catalyzed decarboxylative etherification of propargyl carbonates to selectively produce propargyl ethers is reported. In the reaction the gold(I) catalyst shows a distinct σ-Lewis acidity rather than the commonly observed π-Lewis acidity, and thus catalyzes the decarboxylation of a variety of propargyl carbonates to give the corresponding propargyl ethers with high selectivity. This reaction represents a rare example of the tunable reactivity of cationic gold(I) complexes between σ-Lewis acidity and π-Lewis acidity.