Results 231 to 240 of about 25,864 (264)
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2010
Over the last fifteen years, N-heterocyclic carbenes (NHCs) have mostly been used as ancillary ligands for the preparation of transition metal-based catalysts. Compared to phosphorus-containing ligands, NHCs tend to bind more strongly to metal centres, avoiding the necessity for the use of excess ligand in catalytic reactions.
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Over the last fifteen years, N-heterocyclic carbenes (NHCs) have mostly been used as ancillary ligands for the preparation of transition metal-based catalysts. Compared to phosphorus-containing ligands, NHCs tend to bind more strongly to metal centres, avoiding the necessity for the use of excess ligand in catalytic reactions.
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N-Heterocyclic Carbenes in Organocatalysis
2010The use of N-heterocyclic carbenes (NHCs) to promote organocatalytic transformations has rapidly expanded in recent years, building upon the classic use of these compounds to generate acyl anion equivalents from aldehydes. This chapter gives an overview of the recent progress made in this area, describing the use of NHCs to generate synthetic ...
Craig D. Campbell +2 more
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Organic Letters, 2017
Boron-hydrogen bond insertion reactions of N-heterocyclic carbene (NHC) boranes and diazoesters can be catalyzed by NHC-boryl iodides and produce stable α-NHC-boryl esters. The conditions of the reaction resemble the previous rhodium-catalyzed transformations (only the catalyst is different); however, the mechanisms of the two reactions are probably ...
Thomas H. Allen +4 more
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Boron-hydrogen bond insertion reactions of N-heterocyclic carbene (NHC) boranes and diazoesters can be catalyzed by NHC-boryl iodides and produce stable α-NHC-boryl esters. The conditions of the reaction resemble the previous rhodium-catalyzed transformations (only the catalyst is different); however, the mechanisms of the two reactions are probably ...
Thomas H. Allen +4 more
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Journal of the American Chemical Society, 2016
The synthesis of hydridosilylenes Ter(H)Si: 3a (Ter: 2,6-bis(2,4,6-trimethylphenyl)phenyl) and Ter*(H)Si: 3b (Ter*: 2,6-bis(2,4,6-triiso-propylphenyl)phenyl) stabilized by the N-heterocyclic carbene (NHC) ImMe4 is reported. The synthesis of stabilized hydridosilylenes 3 was accomplished by a previously unknown NHC-induced fragmentation of ...
Dennis, Lutters +3 more
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The synthesis of hydridosilylenes Ter(H)Si: 3a (Ter: 2,6-bis(2,4,6-trimethylphenyl)phenyl) and Ter*(H)Si: 3b (Ter*: 2,6-bis(2,4,6-triiso-propylphenyl)phenyl) stabilized by the N-heterocyclic carbene (NHC) ImMe4 is reported. The synthesis of stabilized hydridosilylenes 3 was accomplished by a previously unknown NHC-induced fragmentation of ...
Dennis, Lutters +3 more
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Organocatalysis by N-Heterocyclic Carbenes
Chemical Reviews, 2007Dieter, Enders +2 more
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The Beginnings of N‐Heterocyclic Carbenes
Angewandte Chemie International Edition, 2010openaire +2 more sources
N-heterocyclic carbene-catalyzed arene formation reactions
Science China Chemistry, 2021Tong Li +2 more
exaly
Recent advances in N-heterocyclic carbene-catalyzed radical reactions
Chinese Chemical Letters, 2021Lei Dai, Song Ye
exaly