76372-69-5Relevant academic research and scientific papers
General and highly efficient synthesis of 2-alkylideneazetidines and β-lactams via copper-catalyzed intramolecular N-vinylation
Lu, Hongjian,Li, Chaozhong
, p. 5365 - 5367 (2007/10/03)
N-Tosyl-3-halo-3-butenylamines underwent efficient Ullmann-type coupling with the catalysis of Cul/N,N-dimethylethylenediamine to afford 2-alkylideneazetidines, which could be readily converted to the corresponding β-lactams by oxidation with O3/sub
Theoretical and Spectroscopical Investigations of Indigo Dyes, XXI. - Synthesis and Spectroscopical Properties of 4,4,4',4'-Tetramethyl-3,3'-dione, a Compound Containing the Basic Chromophore of Indigo
Wille, Eike,Luettke, Wolfgang
, p. 2039 - 2054 (2007/10/02)
4,4,4',4'-Tetramethyl-3,3'-dione (3) has been prepared by potassium cyanide catalyzed dimerization of 4,4-dimethyl-1-tosyl-3-pyrrolidinone (13).The parallelism of the chemical and spectroscopical properties of 3 and indigo 2 show
