Palladium-Catalysed Amination of Electron-Deficient or Relatively Electron-Rich Benzo[b]thienyl Bromides− Preliminary Studies of Antimicrobial Activity and SARs
作者:Maria-João R. P. Queiroz、Agathe Begouin、Isabel C. F. R. Ferreira、Gilbert Kirsch、Ricardo C. Calhelha、Sandra Barbosa、Letícia M. Estevinho
DOI:10.1002/ejoc.200400218
日期:2004.9
Several diarylamines in the benzo[b]thiophene series were prepared in good to high yields by palladium-catalysed amination of ethyl 3-bromobenzo[b]thiophene-2-carboxylate with anilines and 5-aminoindole in the presence of Pd(OAc)2, BINAP and Cs2CO3 in toluene. The presence of the ester group at the 2-position of the benzo[b]thiophene moiety increases the yields and lowers the heating times relative
Palladium-Catalyzed Domino CH/NH Functionalization: An Efficient Approach to Nitrogen-Bridged Heteroacenes
作者:Natsuyo Kamimoto、Dieter Schollmeyer、Koichi Mitsudo、Seiji Suga、Siegfried R. Waldvogel
DOI:10.1002/chem.201500897
日期:2015.5.26
Palladium‐catalyzed domino CH/NH functionalization for the synthesis of novel nitrogen‐bridged thienoacenes and 10H‐benzo[4,5]thieno[3,2‐b]indole derivatives from dihaloarene is reported. This domino sequence consists of initial CH functionalization of the benzo[b]thiophene moiety, followed by Buchwald–Hartwig coupling. This transformation is also useful for the synthesis of highly π‐extended compounds.
钯催化的多米诺Ç H /Ñ ħ官能新型含氮桥连thienoacenes的合成和10 ħ -苯并[4,5]噻吩并[3,2- b ]报道从二卤代芳烃吲哚衍生物。该多米诺序列由苯并[ b ]噻吩部分的初始CH功能化,然后是布赫瓦尔德-哈特维格偶联。这种转变对于合成高度π扩展的化合物也很有用。