An allenylidene Au() catalyst derived from triazole units and its initial application

An allenylidene Au( i ) catalyst based on triazolylidene moieties, featuring the high σ-donating ability (comparable to that of other NHC ligands) and largely enhanced π-accepting ability of its ligand, was developed for the first time. As compared with the extant gold complexes such as IPrAuCl, Ph...

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Published inChemical communications (Cambridge, England) Vol. 56; no. 43; pp. 5787 - 579
Main Authors Chen, Bai-Ling, Zhang, Yuan, Lei, Ya-Ru, Wang, Hui-Ming, Chen, Zili
Format Journal Article
LanguageEnglish
Published CAMBRIDGE Royal Soc Chemistry 28.05.2020
Royal Society of Chemistry
Subjects
Aromatic compounds
Catalysts
Chemistry
Chemistry, Multidisciplinary
Crystallography
Gold
Ligands
NMR
Nuclear magnetic resonance
Physical Sciences
Science & Technology
Triazoles
LIGANDS
AU
1,2,3-TRIAZOLYLIDENES
CYCLOADDITIONS
CARBENES
NAZAROV CYCLIZATION
COMPLEXES
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Summary:An allenylidene Au( i ) catalyst based on triazolylidene moieties, featuring the high σ-donating ability (comparable to that of other NHC ligands) and largely enhanced π-accepting ability of its ligand, was developed for the first time. As compared with the extant gold complexes such as IPrAuCl, Ph 3 PAuCl and (PhO) 3 PAuCl, these allenylidene Au( i ) catalysts exhibited superior catalytic activities in the gold-catalyzed Nazarov reaction of aryl enones. First example of allenylidene Au( i ) catalyst, based upon alkynyl triazole unit, was developed and utilized in Au( i ) mediated Nazarov reaction.
Bibliography:3d
For ESI and crystallographic data in CIF or other electronic format see DOI
1906049
and
(CIF). CCDC
Electronic supplementary information (ESI) available: Including experimental procedures, spectrum data and NMR spectra of all new products and X-ray data for
,
10.1039/d0cc00429d
3a
S1
2a
1903172-1903174
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1359-7345
1364-548X
DOI:10.1039/d0cc00429d