Preparation of 3-substituted-2-pyridin-2-ylindoles: regioselectivity of Larock’s indole annulation with 2-alkynylpyridines
摘要:
A regioselective Larock approach to 3-substituted-2-pyridin-2-ylindoles from 2-alkynylpyridines and 2-iodoanilines is described herein. The unexpectedly high regioselectivity can be rationalized by a combination of steric, coordinative and electronic effects. (C) 2007 Elsevier Ltd. All rights reserved.
Xanthate-mediated synthesis of (<i>E</i>)-alkenes by semi-hydrogenation of alkynes using water as the hydrogen donor
作者:Xianglin Luo、Xiuwen Chen、Lu Chen、Kun Zhang、Yibiao Li
DOI:10.1039/c9cc00128j
日期:——
Semi-hydrogenation of alkynes is one of the most widely used methods for obtaining alkenes in laboratory preparation and in industry. Transition metal catalysts have been extensively studied for this transformation, but the tolerance of functional groups, such as pyridine, –OH, –NH2, –Bpin, and halides, and the toxicity of the trace amount of transition metal catalysts are still highly challenging
Preparation of 3-substituted-2-pyridin-2-ylindoles: regioselectivity of Larock’s indole annulation with 2-alkynylpyridines
作者:Frank Roschangar、Jianxiu Liu、Emilie Estanove、Marine Dufour、Sonia Rodríguez、Vittorio Farina、Eugene Hickey、Azad Hossain、Paul-James Jones、Heewon Lee、Bruce Z. Lu、Richard Varsolona、Jürgen Schröder、Pierre Beaulieu、James Gillard、Chris H. Senanayake
DOI:10.1016/j.tetlet.2007.11.040
日期:2008.1
A regioselective Larock approach to 3-substituted-2-pyridin-2-ylindoles from 2-alkynylpyridines and 2-iodoanilines is described herein. The unexpectedly high regioselectivity can be rationalized by a combination of steric, coordinative and electronic effects. (C) 2007 Elsevier Ltd. All rights reserved.