Reactivity of Morita–Baylis–Hillman Adducts in C–H Functionalization of (Hetero)aryl Nitrones: Access to Bridged Cycles and Carbazoles
作者:Ashok Kumar Pandey、Dahye Kang、Sang Hoon Han、Heeyoung Lee、Neeraj Kumar Mishra、Hyung Sik Kim、Young Hoon Jung、Sungwoo Hong、In Su Kim
DOI:10.1021/acs.orglett.8b01910
日期:2018.8.3
nitrones with Morita–Baylis–Hillman (MBH) adducts is described. An allylated intermediate derived from aryl nitrones and MBH adducts allows the formation of bridged cyclic compounds via an exotype [3 + 2] cycloaddition. In sharp contrast, electron-rich indolinyl or aniline substrates were found to couple with MBH adducts to generate naphthalene or carbazole derivatives, respectively.
Oxidative Pd(II)-Catalyzed C−H Bond Amination to Carbazole at Ambient Temperature
作者:James A. Jordan-Hore、Carin C. C. Johansson、Moises Gulias、Elizabeth M. Beck、Matthew J. Gaunt
DOI:10.1021/ja806543s
日期:2008.12.3
We report a new Pd(II)-catalyzed C-H bond amination reaction to form carbazoles, an important motif that is prevalent in a range of systems. The catalytic amination process operates under extremely mild conditions and produces carbazole products in good to excellent yields. Carbazoles possessing complex moleculararchitecture can also be formed using this reaction, highlighting its potential in natural