36377-40-9Relevant articles and documents
Ultrasound-Promoted Synthesis of Spirocyclopropanes from Switchable Starting Materials via Azomethine Ylide [3+2]-Cycloaddition
Yavari, Issa,Sheikhi, Sara,Sheykhahmadi, Jamil,Taheri, Zohreh,Halvagar, Mohammad Reza
, p. 2057 - 2066 (2021/02/26)
An ultrasound-promoted green protocol to access a new series of spirocyclopropanes from indeno[1,2- b ]quinoxaline derivatives and azomethine ylides, generated in situ from the iodine-catalyzed reaction of acetophenones as well as of 2-methylquinoline with pyridine in the presence of a base, is described. These transformations proceed via a spirocyclopropanation reaction followed by elimination of pyridine. Clear evidence for the structure of a spirocyclopropane-linked indenoquinoxaline derivative was obtained from single-crystal X-ray analysis. The most important feature of this reaction is the fact it forms three stereogenic centers, one of which is quaternary, with excellent selectivity.
Nucleophilicity parameters of pyridinium ylides and their use in mechanistic analyses
Allg?uer, Dominik S.,Mayer, Peter,Mayr, Herbert
supporting information, p. 15216 - 15224 (2013/11/06)
Kinetics of the reactions of pyridinium, isoquinolinium, and quinolinium ylides with diarylcarbenium ions, quinone methides, and arylidene malonates (reference electrophiles) have been studied in dimethylsulfoxide solution by UV-vis spectroscopy. The seco
Synthesis of tetrasubstituted pyridazines via cascade reactions of diazocarbonyl compounds with pyridinium ylides
Tomilov,Platonov,Dorokhov,Zhalnina
experimental part, p. 1252 - 1256 (2009/08/07)
Reactions of pyridinium ylides with diazocarbonyl compounds involve the formation of functionalized azine intermediates that can undergo intramolecular cyclocondensation into tetrasubstituted pyridazines provided the starting reagents contain carbonyl groups. Reactions of pyridinium ylides with diazo compounds were studied for various substituents in both the substrates.