InX3-catalyzed haloamidation of vinyl arenes: a facile synthesis of α-bromo- and α-fluoroamides
摘要:
A variety of alkenes are converted into the corresponding alpha-fluoroamides in high yields by selectfluor (TM) in the presence of 10 mol % of InF3 in nitrile solution. alpha-Bromoamides are obtained with NBS in the presence of 10 mol % InBr3 under similar conditions. The use of Lewis acid in haloamidation significantly improved the yields and reaction rates. (C) 2009 Elsevier Ltd. All rights reserved.
A range of alkenes are converted to vicinal fluoroacetamides in high yield by reaction with 1-fluoro-4-hydroxy-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate)(AccufluorTM NFTh) in acetonitrile solution.
A variety of alkenes are converted into the corresponding alpha-fluoroamides in high yields by selectfluor (TM) in the presence of 10 mol % of InF3 in nitrile solution. alpha-Bromoamides are obtained with NBS in the presence of 10 mol % InBr3 under similar conditions. The use of Lewis acid in haloamidation significantly improved the yields and reaction rates. (C) 2009 Elsevier Ltd. All rights reserved.