作者:James A. Rossi‐Ashton、Aimee K. Clarke、James R. Donald、Chao Zheng、Richard J. K. Taylor、William P. Unsworth、Shu‐Li You
DOI:10.1002/anie.202001956
日期:2020.5.4
The enantioselective intermolecular C2-allylation of 3-substituted indoles is reported for the first time. This directing group-free approach relies on a chiral Ir-(P, olefin) complex and Mg(ClO4 )2 Lewis acid catalyst system to promote allylic substitution, providing the C2-allylated products in typically high yields (40-99 %) and enantioselectivities (83-99 % ee) with excellent regiocontrol. Experimental
Gold‐Catalyzed Annulations of 1‐(2,3‐Butadienyl)‐1
<i>H</i>
‐Indole Derivatives
作者:José Barluenga、María Piedrafita、Alfredo Ballesteros、Ángel L. Suárez‐Sobrino、José M. González
DOI:10.1002/chem.201001754
日期:2010.10.18
Gold‐ringing! Modification of the substitution at C2 drives an entirely different cyclization of N‐tethered allenylindoles. An efficient cycloisomerization takes place for the case of R being hydrogen, that is, compatible with additional functional groups. A methyl at C2 precludes this possibility and launches a stepwise process that can be tuned to yield macrocyclic trimers.
Two‐in‐One Strategy for Palladium‐Catalyzed C−H Functionalization in Water
作者:Huiying Zeng、Zemin Wang、Chao‐Jun Li
DOI:10.1002/anie.201813391
日期:2019.2.25
Transition metal catalyzedC−Hfunctionalizations have been developed as powerful methods for C−C bond formations. Directing groups, removable directing groups, traceless directing groups, and transient directing groups (TDGs) have been successfully used to improve the reaction efficiencies. For the development of greener and more sustainable methods, C−Hfunctionalization using a TDG that also serves
Thioether Adducts of a New Imine Reactive Intermediate of the Pneumotoxin 3-Methylindole
作者:Konstantine W. Skordos、John D. Laycock、Garold S. Yost
DOI:10.1021/tx9801209
日期:1998.11.1
deuterated analogues of 3-methylindole to trap the imine intermediate as its thioether conjugates. The N-acetylcysteine conjugate of 3-hydroxy-3-methylindolenine was detectable by LC/MS, but a molecular ion was not observed because the adduct rapidly dehydrated to form the 2-substituted indole. However, the imine was S-alkylated, and the intermediate carbinol was intramolecularly trapped using thioglycolic
Following Nature’s Footprint: Mimicking the High-Valent Heme-Oxo Mediated Indole Monooxygenation Reaction Landscape of Heme Enzymes
作者:Pritam Mondal、Shanuk Rajapakse、Gayan B. Wijeratne
DOI:10.1021/jacs.1c11068
日期:2022.3.9
Pathways for directconversion of indoles to oxindoles have accumulated considerable interest in recent years due to their significance in the clear comprehension of various pathogenic processes in humans and the multipotent therapeutic value of oxindole pharmacophores. Heme enzymes are predominantly responsible for this conversion in biology and are thought to proceed with a compound-I active oxidant