Photoredox/Nickel Dual Catalysis-Enabled Modular Synthesis of Arylallyl Alcohols with Acetylene as the Two-Carbon Synthon
作者:Kangkui Li、Xianyang Long、Shifa Zhu
DOI:10.1021/acscatal.2c06178
日期:2023.2.17
alcohols were synthesized in an acetylene atmosphere (1 atm). This method features broad substrate scopes, good functional group tolerance, and high Z-selectivity. In addition to the intermolecular difunctionalization of acetylene, the reaction is also amenable to intramolecular ring formation, giving highly valuable indenols and indanones. The mechanistic investigation indicates that the alkenylnickel
Reactions of vinyltributylgermanes and aryl halides under Heck conditions
作者:Nicole M. Torres、Jérôme M. Lavis、Robert E. Maleczka
DOI:10.1016/j.tetlet.2009.05.035
日期:2009.8
We describe the palladium-mediated reaction of vinyltributylgermanes with aryl halides under Heck conditions. Depending on their degree of substitution, (E)-vinyltributylgermanes preferentially afford either the cine or Z-alkenyl coupled products in moderate yields. Substituents at the allylic position, especially oxygen, impact regio- and stereoselectivity. (C) 2009 Elsevier Ltd. All rights reserved.
Aqueous phase semihydrogenation of alkynes over Ni–Fe bimetallic catalysts
作者:Rohit K. Rai、Mahendra K. Awasthi、Vipin K. Singh、Sudipta Roy Barman、Silke Behrens、Sanjay K. Singh
DOI:10.1039/d0cy01153c
日期:——
Bimetallic Ni–Fe catalysts (Ni/Fe, 1 : 1, 1 : 3, and 3 : 1) are synthesized and explored for their catalytic activity in semihydrogenation of internal alkynes using H2 gas in water–ethanol solution.