4918-23-4Relevant academic research and scientific papers
Copper(I)-catalyzed cycloaddition of 4-bromosydnones and alkynes for the regioselective synthesis of 1,4,5-trisubstituted pyrazoles
Decuypere, Elodie,Specklin, Simon,Gabillet, Sandra,Audisio, Davide,Liu, Hui,Plougastel, Lucie,Kolodych, Sergii,Taran, Frédéric
supporting information, p. 362 - 365 (2015/01/30)
Copper-catalyzed cycloaddition of alkynes with 4-bromosydnones provides a convenient, mild, and regioselective method for the synthesis of a wide range of bromopyrazoles. The broad functional group tolerance of the cycloaddition reaction and further palla
Catalytic activity of 1,3-dibromo-5,5-dimethylhydantoin (DBH) in the one-pot transformation of N-arylglycines to N-arylsydnones in the presence of NaNO2/Ac2O under neutral conditions: Subsequent bromination of these sydnones to their
Azarifar, Davood,Ghasemnejad-Bosra, Hassan
, p. 1123 - 1126 (2007/10/03)
1,3-Dibromo-5,5-dimethylhydantoin (DBH) has been found to efficiently catalyze the one-pot conversion of various N-arylglycines through N-nitrosation and cyclization to sydnones in combination with NaNO2 and Ac 2O in high yields (80-
Transformation of the sydnone ring into oxadiazolinones. A convenient one-pot synthesis of 3-aryl-5-methyl-1,3,4-oxadiazolin-2-ones from 3- arylsydnones and their antimicrobial activity
Mallur, Shanta G.,Badami, Bharati V.
, p. 65 - 67 (2007/10/03)
3-Arylsydnones (Ia-u) have been converted into the corresponding 3-aryl- 5-methyl-1,3,4-oxadiazolin-2-ones (IIIa-u) by a single-step reaction with bromine in acetic anhydride. In the preliminary screening of all these compounds, the halogen-substituted de
