105141-03-5Relevant academic research and scientific papers
An improved synthesis of 2-diazo-1,3-diketones
Popic,Korneev,Nikolaev,Korobitsyna
, p. 195 - 198 (1991)
The sodium hydride/dibenzo-18-crown-6 ether system was found to be an effective base for the synthesis of 1,3-diketones by the Claisen condensation. The use of potassium fluoride (with or without crown ether) as the base in diazo-transfer reactions extends this reaction to the synthesis of hindered diazo diketones. In the case of isomeric 1,3-diketones, the stereoselectivity of the process considerably rises.
Catalyst-Free Electrophilic Ring Expansion of N-Unprotected Aziridines with α-Oxoketenes to Efficient Access 2-Alkylidene-1,3-Oxazolidines
Chen, Xingpeng,Huang, Zhengshuo,Xu, Jiaxi
supporting information, p. 3098 - 3108 (2021/05/10)
2-(2-Oxoalkylidene)-1,3-oxazolidine derivatives were synthesized in good to excellent yields regiospecifically through the catalyst-free electrophilic ring expansion of N-unprotected aziridines and the ketene C=O double bond of α-oxoketenes, in situ generated from the microwave-assisted Wolff rearrangement of 2-diazo-1,3-diketones. The ring expansion predominantly underwent an SN1 process and the hydrogen bond decides the (E)-configuration of products. (Figure presented.).
Aroyldiazomethanes by mild acyl cleavage of diaroyldiazomethanes over Al2O3
Korneev,Richter
, p. 1248 - 1250 (2007/10/02)
The synthesis of aroyldiazomethanes by the mild and rapid acyl cleavage of diaroyldiazomethanes on the surface of neutral alumina is reported.
