Unusual C–O bond cleavage of aromatic ethers in ruthenium complexes bearing a 2-alkoxypyridyl fragment

2019 ◽  
Vol 48 (36) ◽  
pp. 13614-13621
Author(s):  
Danfeng Deng ◽  
Bowen Hu ◽  
Min Yang ◽  
Dafa Chen
Keyword(s):  
Bond Cleavage ◽  
Ruthenium Complexes

The SN2 C–O cleavage mechanism with neutral H2O switches to SNAr when KOH is added.

Selective Bond Cleavage Reactions by Low-Valent Ruthenium Complexes

ChemInform ◽  
2003 ◽  
Vol 34 (18) ◽  
Author(s):  
Masafumi Hirano ◽  
Nobuyuki Komine ◽  
Sanshiro Komiya
Keyword(s):  
Bond Cleavage ◽  
Ruthenium Complexes ◽  
Cleavage Reactions ◽  
Low Valent

Formation of Acyl and Dioxycarbene Ruthenium Complexes via Double C–S Bond Cleavage and CO Insertion

2015 ◽  
Vol 88 (4) ◽  
pp. 613-615
Author(s):  
Kiyokazu Santo ◽  
Masakazu Hirotsu ◽  
Keisuke Kawamoto ◽  
Takanori Nishioka ◽  
Isamu Kinoshita
Keyword(s):  
Bond Cleavage ◽  
Ruthenium Complexes ◽  
Co Insertion

scholarly journals Nitrogen-nitrogen bond cleavage catalyzed by ruthenium complexes

ARKIVOC ◽  
2006 ◽  
Vol 2007 (4) ◽  
pp. 170-181
Author(s):  
Sandra Martínez ◽  
Elisenda Trepat ◽  
Marcial Moreno-Mañas ◽  
Rosa María Sebastián ◽  
Adelina Vallribera ◽  
...  
Keyword(s):  
Bond Cleavage ◽  
Ruthenium Complexes ◽  
Nitrogen Bond

S–H Bond cleavage versus thiol co-ordination in half-sandwich ruthenium complexes †

1999 ◽  
pp. 4309-4314 ◽  
Author(s):  
Alberto Coto ◽  
Isaac de los Ríos ◽  
Manuel Jiménez Tenorio ◽  
M. Carmen Puerta ◽  
Pedro Valerga
Keyword(s):  
Bond Cleavage ◽  
Ruthenium Complexes ◽  
Half Sandwich

Metal–ligand cooperative C–O bond cleavage of propargylic alcohol with protic pyrazole complexes of ruthenium

2019 ◽  
Vol 220 ◽  
pp. 364-375
Author(s):  
Naoto Tashima ◽  
Satomi Ohta ◽  
Shigeki Kuwata
Keyword(s):  
Bond Cleavage ◽  
Ruthenium Complexes ◽  
Propargylic Alcohol ◽  
Metal Ligand

Protic pyrazole–ruthenium complexes promoted the C–O and C–H bond cleavage of a propargylic alcohol through metal–ligand cooperation.

Selective Cα–Cβ bond cleavage by water in allenylidene and alkenylvinylidene ruthenium complexes

1999 ◽  
pp. 443-444 ◽  
Author(s):  
Claudio Bianchini ◽  
Maurizio Peruzzini ◽  
Fabrizio Zanobini ◽  
Carlos Lopez ◽  
Isaac de los Rios ◽  
...  
Keyword(s):  
Bond Cleavage ◽  
Ruthenium Complexes

scholarly journals Selective Bond Cleavage Reactions by Low-valent Ruthenium Complexes.

2002 ◽  
Vol 60 (12) ◽  
pp. 1148-1157 ◽  
Author(s):  
Masafumi Hirano ◽  
Nobuyuki Komine ◽  
Sanshiro Komiya
Keyword(s):  
Bond Cleavage ◽  
Ruthenium Complexes ◽  
Cleavage Reactions ◽  
Low Valent

Metal-Metal Cooperative Bond Activation by Heterobimetallic Alkyl, Aryl, and Acetylide PtII/CuI Complexes

2020 ◽  
Author(s):  
Shubham Deolka ◽  
Orestes Rivada Wheelaghan ◽  
Sandra Aristizábal ◽  
Robert Fayzullin ◽  
Shrinwantu Pal ◽  
...  
Keyword(s):  
Alkyl Group ◽  
Bond Activation ◽  
Bond Cleavage ◽  
Terminal Alkyne ◽  
Alkyl Aryl ◽  
Metal Metal ◽  
The Stability ◽  
Selective Formation ◽  
Organoplatinum Compounds

We report selective formation of heterobimetallic PtII/CuI complexes that demonstrate how facile bond activation processes can be achieved by altering reactivity of common organoplatinum compounds through their interaction with another metal center. The interaction of the Cu center with Pt center and with a Pt-bound alkyl group increases the stability of PtMe2 towards undesired rollover cyclometalation. The presence of the CuI center also enables facile transmetalation from electron-deficient tetraarylborate [B(ArF)4]- anion and mild C-H bond cleavage of a terminal alkyne, which was not observed in the absence of an electrophilic Cu center. The DFT study indicates that the role of Cu center acts as a binding site for alkyne substrate, while activating its terminal C-H bond.

Room Temperature Alkali Metal Reduction of Carbon Dioxide

2020 ◽  
Author(s):  
Lucas A. Freeman ◽  
Akachukwu D. Obi ◽  
Haleigh R. Machost ◽  
Andrew Molino ◽  
Asa W. Nichols ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Alkali Metals ◽  
Room Temperature ◽  
Chemical Reduction ◽  
Bond Cleavage ◽  
Open Shell ◽  
Metal Reduction ◽  
One Pot ◽  
Earth Abundant ◽  
Electron Reduction

The reduction of the relatively inert carbon–oxygen bonds of CO<sub>2</sub> to access useful CO<sub>2</sub>-derived organic products is one of the most important fundamental challenges in synthetic chemistry. Facilitating this bond-cleavage using earth-abundant, non-toxic main group elements (MGEs) is especially arduous because of the difficulty in achieving strong inner-sphere interactions between CO<sub>2</sub> and the MGE. Herein we report the first successful chemical reduction of CO<sub>2</sub> at room temperature by alkali metals, promoted by a cyclic(alkyl)(amino) carbene (CAAC). One-electron reduction of CAAC-CO<sub>2</sub> adduct (<b>1</b>) with lithium, sodium or potassium metal yields stable monoanionic radicals clusters [M(CAAC–CO<sub>2</sub>)]<sub>n</sub>(M = Li, Na, K, <b> 2</b>-<b>4</b>) and two-electron alkali metal reduction affords open-shell, dianionic clusters of the general formula [M<sub>2</sub>(CAAC–CO<sub>2</sub>)]<sub>n </sub>(<b>5</b>-<b>8</b>). It is notable that these crystalline clusters of reduced CO<sub>2</sub> may also be isolated via the “one-pot” reaction of free CO<sub>2</sub> with free CAAC followed by the addition of alkali metals – a reductive process which does not occur in the absence of carbene. Each of the products <b>2</b>-<b>8</b> were investigated using a combination of experimental and theoretical methods.<br>

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