In:
Angewandte Chemie, Wiley, Vol. 133, No. 35 ( 2021-08-23), p. 19430-19435
Abstract:
Chalcogen bonding results from non‐covalent interactions occurring between electrodeficient chalcogen atoms and Lewis bases. Among the chalcogens, tellurium is the strongest Lewis acid, but Te‐based compounds are scarcely used as organocatalysts. For the first time, telluronium cations demonstrated impressive catalytic properties at low loadings in three benchmark reactions: the Friedel–Crafts bromination of anisole, the bromolactonization of ω‐unsaturated carboxylic acids and the aza‐Diels–Alder between Danishefsky's diene and imines. The ability of telluronium cations to interact with a Lewis base through chalcogen bonding was demonstrated on the basis of multi‐nuclear ( 17 O, 31 P, and 125 Te) NMR analysis and DFT calculations.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v133.35
DOI:
10.1002/ange.202105482
Language:
English
Publisher:
Wiley
Publication Date:
2021
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