Access to Diverse Seleno-spirocyclohexadienones via Ag(II)-Catalyzed Selenylative -Annulation with Se and Boronic Acids.

An efficient and straightforward synthesis of diversified seleno-azaspiro-2,5-cyclohexadienones from -(4-methoxy aryl)propiolamides using elemental selenium and boronic acids has been demonstrated. The reaction proceeds through silver-catalyzed oxidative dearomatization in the presence of potassium persulfate (KSO) as the oxidant. Further, this approach was extended to -(4-methoxy aryl)propiolates and biaryl ynones to access the corresponding selenylated oxospiro-2,5-cyclohexadienones and spiro[5,5]trienones, respectively.

Correction: I/TBHP mediated diastereoselective synthesis of spiroaziridines.

Correction for 'I/TBHP mediated diastereoselective synthesis of spiroaziridines' by Kizhakkan Thiruthi Ashitha , , 2020, , 1588-1593, DOI: 10.1039/C9OB02711D.

I/TBHP mediated diastereoselective synthesis of spiroaziridines.

Eventhough spiroheterocycles are considered as emerging drug candidates, synthesis of spiroaziridines has not been well explored so far. Herein, we disclose an efficient I2/TBHP mediated diastereoselective synthesis of N-alkyl spiroaziridines from primary amines and easily accessible α,β-unsaturated ketones. The reaction is also compatible for the synthesis of 2-aroylaziridines.