Catalyst-Free and Metal-Free Electrophilic Bromoamidation of Unactivated Olefins Using the <i>N</i>-Bromosuccinimide/Sulfonamide Protocol
作者:Wesley Zongrong Yu、Feng Chen、Yi An Cheng、Ying-Yeung Yeung
DOI:10.1021/jo502416r
日期:2015.3.6
An efficient, catalyst-free, and metal-free bromoamidation of unactivated olefins has been developed. 4-(Trifluoromethyl)benzenesulfonamide and N-bromosuccinimide were used as the nitrogen and halogen sources, respectively. The methodology is applicable to both cyclic and aliphatic olefins.
A novel photochemical approach for the synthesis of phenanthrene derivatives fromlinear 3-aryl-N-(arylsulfonyl) propiolamides via a tandem radical Smiles rearrangement/C–S bonding/Mallory reaction is disclosed. The control experiment results and isolation of the key intermediates give further insight into the reaction mechanism. Gram scale reaction using a flow reactor demonstrated the synthetic potential
A compound represented by the following general formula (1) or a salt thereof, which has superior inhibitory activity against type 4 PLA
2
, and thus has prostaglandin and/or leucotriene production suppressing action [X represents a halogen atom, an alkyl group which may be substituted, or the like, Y represents hydrogen atom or an alkyl group which may be substituted, and Z represents hydrogen atom or an alkyl group which may be substituted].