A new general synthesis of annulated 1,2,3-triazoles using tandem Sonogashira-CuAAC reaction
作者:Moumita Rakshit、Gandhi K. Kar、Manas Chakrabarty
DOI:10.1007/s00706-015-1430-y
日期:2015.10
AbstractA number of novel, fused 1,2,3-triazoles have been synthesized efficiently by the palladium(0)-copper(I)-catalyzed intramolecular heteroannulation of 2-/1-azidomethyl-1-/2-bromodihydro-naphthalenes, -arene and -cycloalkenes with terminal alkynes involving tandem Sonogashira coupling-CuAAC reaction. Graphical abstract
Copper powder-catalyzed coupling and cyclization of 1-bromoallyl bromides with amidine hydrochlorides leading to pyrimidines
作者:Ha Kyeong Lee、Ho-Sang Sohn、Chan Sik Cho
DOI:10.1080/00397911.2017.1287276
日期:2017.6.3
ABSTRACT 1-Bromoallyl bromides are coupled and cyclized with amidinehydrochlorides in DMF at 130 °C in the presence of a catalytic amount of copper powder along with K3PO4 to give pyrimidines in moderate to good yields. GRAPHICAL ABSTRACT
摘要 在催化量的铜粉和 K3PO4 存在下,1-溴代烯丙基溴在 DMF 中于 130 °C 与脒盐酸盐偶联和环化,以中等至良好的收率得到嘧啶。图形概要
Palladium-catalyzed cyclization/cyclopropanation reaction for the synthesis of fused N-containing heterocycles
作者:Sukla Nandi、Jayanta K. Ray
DOI:10.1016/j.tetlet.2009.09.156
日期:2009.12
Palladium-catalyzedcyclization/cyclopropanation can be used to convert a range of substituted cyclic N-aryl allyl/methallyl amines efficiently and selectively to the corresponding fused tetrahydropyridine/cyclopropane-fused isoquinoline derivatives via β-hydrogen elimination or a domino sequence.
Pd(0)-catalyzed intramolecular Heck reaction: A general route for fused oxepine derivatives
作者:Arup Kumar Adak、Arabinda Mandal、Susanta Kumar Manna、Suresh Kumar Mondal、Akash Jana、Dipesh Ghosh、Debasish Kundu、Shubhankar Samanta、Jayanta K. Ray
DOI:10.1080/00397911.2016.1142566
日期:2016.3.3
ABSTRACT A simple and facile approach for the synthesis of various structurally different tricyclic bent oxepine frameworks from a readily accessible precursor has been introduced. The synthesis of substituted oxepine derivative involved Pd(0)-catalyzed Heckreaction. This methodology enriches the literature for the large ring formation. GRAPHICAL ABSTRACT