Palladium-Catalyzed Electrochemical C–H Bromination Using NH<sub>4</sub>Br as the Brominating Reagent
作者:Qi-Liang Yang、Xiang-Yang Wang、Tong-Lin Wang、Xiang Yang、Dong Liu、Xiaofeng Tong、Xin-Yan Wu、Tian-Sheng Mei
DOI:10.1021/acs.orglett.9b00629
日期:2019.4.19
palladium-catalyzed electrochemical C–H bromination of benzamide derivatives under divided cells is developed, in which NH4Br serves as a brominating reagent and electrolyte. The protocol avoids the use of chemical oxidants and provides an alternative method for the synthesis of aryl bromides.
Iodinane- and Metal-Free Synthesis of <i>N</i>-Cyano Sulfilimines: Novel and Easy Access of <i>N</i>H-Sulfoximines
作者:Olga García Mancheño、Olivia Bistri、Carsten Bolm
DOI:10.1021/ol7016577
日期:2007.9.1
The synthesis of N-cyanosulfilimines can readily be achieved by reaction of the corresponding sulfides with cyanogen amine in the presence of a base and NBS or I-2 as halogenating agents. Oxidation followed by C-N bond cleavage affords synthetically useful NH-free sulfoximines.
Synthesis of <i>N</i>-(1<i>H</i>)-Tetrazole Sulfoximines
作者:Olga García Mancheño、Carsten Bolm
DOI:10.1021/ol071302+
日期:2007.7.1
N-(1H)-Tetrazole sulfoximines are readily available by addition of sodium azide to the corresponding N- cyano derivatives in the presence of ZnBr2. The use of these N-(1H)-tetrazoles as intermediates in the synthesis of other N-heterocyclic sulfoximines is demonstrated.