scholarly journals In Situ Catalyst Modification in Atom Transfer Radical Reactions with Ruthenium Benzylidene Complexes

2016 ◽  
Vol 138 (22) ◽  
pp. 7171-7177 ◽  
Author(s):  
Juneyoung Lee ◽  
Jessica M. Grandner ◽  
Keary M. Engle ◽  
K. N. Houk ◽  
Robert H. Grubbs
Keyword(s):  
Radical Reactions ◽  
Atom Transfer ◽  
Catalyst Modification

In situ fabrication of PHEMA–BSA core–corona biohybrid particles

2016 ◽  
Vol 4 (25) ◽  
pp. 4430-4438 ◽  
Author(s):  
Jin-Tao Wang ◽  
Yanhang Hong ◽  
Xiaotian Ji ◽  
Mingming Zhang ◽  
Li Liu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Atom Transfer ◽  
Hydroxyethyl Methacrylate ◽  
In Situ Fabrication ◽  
Radical Polymerizations

Poly(2-hydroxyethyl methacrylate)–bovine serum albumin core–corona particles were prepared using in situ activators generated by electron transfer for atom transfer radical polymerizations of HEMA initiated by a BSA macroinitiator.

Ruthenium catalysts bearing N-heterocyclic carbene ligands in atom transfer radical reactions

2003 ◽  
Vol 44 (32) ◽  
pp. 6011-6015 ◽  
Author(s):  
Aurore Richel ◽  
Sébastien Delfosse ◽  
Cédric Cremasco ◽  
Lionel Delaude ◽  
Albert Demonceau ◽  
...  
Keyword(s):  
Ruthenium Catalysts ◽  
Radical Reactions ◽  
Atom Transfer ◽  
Carbene Ligands

scholarly journals β C–H di-halogenation via iterative hydrogen atom transfer

2018 ◽  
Vol 9 (19) ◽  
pp. 4500-4504 ◽  
Author(s):  
Ethan A. Wappes ◽  
Avassaya Vanitcha ◽  
David A. Nagib
Keyword(s):  
Hydrogen Atom ◽  
Hydrogen Atom Transfer ◽  
Atom Transfer

A radical relay strategy for mono- and di-halogenation (iodination, bromination, and chlorination) of sp3 C–H bonds has been developed. This first example of double, geminal C–H functionalization is enabled via iterative, hydrogen atom transfer (HAT) by in situ generated imidate radicals.

A Cationic Diruthenium Amidinate, [(η5-C5Me5)Ru (μ2-i-PrN=C(Me)Ni-Pr)Ru (η5-C5Me5)]+, as an Efficient Catalyst for the Atom-Transfer Radical Reactions.

ChemInform ◽  
2004 ◽  
Vol 35 (36) ◽  
Author(s):  
Yukihiro Motoyama ◽  
Mitsuru Gondo ◽  
Satoshi Masuda ◽  
Yuya Iwashita ◽  
Hideo Nagashima
Keyword(s):  
Radical Reactions ◽  
Atom Transfer ◽  
Efficient Catalyst

scholarly journals Tandem catalysis of ring-closing metathesis/atom transfer radical reactions with homobimetallic ruthenium–arene complexes

2010 ◽  
Vol 6 ◽  
pp. 1167-1173 ◽  
Author(s):  
Yannick Borguet ◽  
Xavier Sauvage ◽  
Guillermo Zaragoza ◽  
Albert Demonceau ◽  
Lionel Delaude
Keyword(s):  
Mixed Valence ◽  
Active Species ◽  
Radical Reactions ◽  
Catalyst Precursor ◽  
Atom Transfer ◽  
Tandem Catalysis ◽  
Ring Closing Metathesis ◽  
Experimental Conditions ◽  
Mixed Valence Compound ◽  
The Individual

The tandem catalysis of ring-closing metathesis/atom transfer radical reactions was investigated with the homobimetallic ruthenium–indenylidene complex [(p-cymene)Ru(μ-Cl)3RuCl(3-phenyl-1-indenylidene)(PCy3)] (1) to generate active species in situ. The two catalytic processes were first carried out independently in a case study before the whole sequence was optimized and applied to the synthesis of several polyhalogenated bicyclic γ-lactams and lactones from α,ω-diene substrates bearing trihaloacetamide or trichloroacetate functionalities. The individual steps were carefully monitored by 1H and 31P NMR spectroscopies in order to understand the intimate details of the catalytic cycles. Polyhalogenated substrates and the ethylene released upon metathesis induced the clean transformation of catalyst precursor 1 into the Ru(II)–Ru(III) mixed-valence compound [(p-cymene)Ru(μ-Cl)3RuCl2(PCy3)], which was found to be an efficient promoter for atom transfer radical reactions under the adopted experimental conditions.

Sign in / Sign up

Export Citation Format

Share Document