Synthesis and Catalytic Activity of Coumarin‐ and Chrysin‐Tethered Triazolylidene Gold(I) Complexes
A series sterically‐encumbered coumarin‐ (1) and chrysin‐functionalized triazolium salts (2,3) have been synthesized stepwise via copper catalyzed alkyne–azide cycloaddition and N‐alkylation procedures. Their one‐pot deprotonation with KHMDS in presence of AuCl(SMe2) allowed for the preparation of t...
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Published in | European journal of inorganic chemistry Vol. 2018; no. 42; pp. 4622 - 4629 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
WEINHEIM
Wiley
15.11.2018
Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | A series sterically‐encumbered coumarin‐ (1) and chrysin‐functionalized triazolium salts (2,3) have been synthesized stepwise via copper catalyzed alkyne–azide cycloaddition and N‐alkylation procedures. Their one‐pot deprotonation with KHMDS in presence of AuCl(SMe2) allowed for the preparation of the corresponding triazolylidene gold(I) complexes (4–6) in high yields (75–92 %). All new compounds were fully characterized by means of 1H and 13C NMR spectroscopy, FT‐IR, elemental analyses and in the case of triazole F, triazolium 1 and the gold complex 4, by single‐crystal X‐ray diffraction. The new triazolylidene gold complexes (4–6) were tested as precatalysts in the synthesis of indole derivatives via an intramolecular hydroamination reaction of several readily available anilines.
We report the synthesis and characterization a series of coumarin‐ and chrysin‐functionalized triazolylidene gold(I) complexes. Their catalytic performance in the synthesis of indoles via an intramolecular hydroamination reaction of several anilines is discussed. |
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ISSN: | 1434-1948 1099-0682 |
DOI: | 10.1002/ejic.201800921 |