Chemoselective Reductions of Nitroaromatics in Water at Room Temperature
作者:Sean M. Kelly、Bruce H. Lipshutz
DOI:10.1021/ol403079x
日期:2014.1.3
A robust and green protocol for the reduction of functionalized nitroarenes to the corresponding primary amines has been developed. It relies on inexpensive zinc dust in water containing nanomicelles derived from the commercially available designer surfactant TPGS-750-M. This mild process takes place at room temperature and tolerates a wide range of functionalities. Highly selective reductions can
Synergistic effects in Fe nanoparticles doped with ppm levels of (Pd + Ni). A new catalyst for sustainable nitro group reductions
作者:Haobo Pang、Fabrice Gallou、Hyuntae Sohn、Jeffrey Camacho-Bunquin、Massimiliano Delferro、Bruce H. Lipshutz
DOI:10.1039/c7gc02991h
日期:——
A remarkable synergistic effect has been uncovered between ppm levels of Pd and Ni embedded within iron nanoparticles that leads to mild and selective catalytic reductions of nitro-containing aromatics and heteroaromatics in water at room temperature. NaBH4 serves as the source of inexpensive hydride. Broad substrate scope is documented, along with several other features including: low catalyst loading
Safe and Selective Nitro Group Reductions Catalyzed by Sustainable and Recyclable Fe/ppm Pd Nanoparticles in Water at Room Temperature
作者:Jie Feng、Sachin Handa、Fabrice Gallou、Bruce H. Lipshutz
DOI:10.1002/anie.201604026
日期:2016.7.25
Fe/ppm Pd nanoparticles and PEG‐containing designer surfactants, a facile and selective reduction of nitro‐containing aromatics and heteroaromatics can be effected in water at roomtemperature in the presence of NaBH4. This new nanotechnology involves lowcatalystloadings, is highly chemoselective, and tolerates a wide variety of functional groups. The process, which includes recycling of the entire
Coolade. A Low‐Foaming Surfactant for Organic Synthesis in Water
作者:Nicholas R. Lee、Margery Cortes‐Clerget、Alex B. Wood、Daniel J. Lippincott、Haobo Pang、Farbod A. Moghadam、Fabrice Gallou、Bruce H. Lipshutz
DOI:10.1002/cssc.201900369
日期:2019.7.5
Several types of reduction reactions in organic synthesis are performed under aqueous micellar‐catalysis conditions (in water at ambient temperature), which produce a significant volume of foam owing to the combination of the surfactant and the presence of gas evolution. The newly engineered surfactant “Coolade” minimizes this important technical issue owing to its low‐foaming properties. Coolade is
Carbonyl Iron Powder: A Reagent for Nitro Group Reductions under Aqueous Micellar Catalysis Conditions
作者:Nicholas R. Lee、Agata A. Bikovtseva、Margery Cortes-Clerget、Fabrice Gallou、Bruce H. Lipshutz
DOI:10.1021/acs.orglett.7b03216
日期:2017.12.15
An especially mild, safe, efficient, and environmentally responsible reduction of aromatic and heteroaromatic nitro-group-containing educts is reported that utilizes very inexpensive carbonyl iron powder (CIP), a highly active commercial grade of iron powder. These reductions are conducted in the presence of nanomicelles composed of TPGS-750-M in water, a recyclable aqueous micellar reaction medium