Article (Scientific journals)
Rhodium catalysts with superbulky NHC ligands for the selective α-hydrothiolation of alkynes.
Bołt, Małgorzata; Delaude, Lionel; Żak, Patrycja
2022In Dalton Transactions, 51 (11), p. 4429-4434
Peer reviewed
 

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Keywords :
Inorganic Chemistry
Abstract :
[en] Eight rhodium complexes-including four new compounds-with the generic formula [RhCl(cod)(NHC)] (cod is 1,3-cyclooctadiene) differing by the size of their N-heterocyclic carbene (NHC) ligand were prepared, characterized, and found to be catalytically active in the hydrothiolation of terminal alkynes with aliphatic or aromatic thiols. The steric bulk of the carbene was found to markedly influence the reaction rate and selectivity. In particular, superbulky NHCs led to the almost quantitative formation of the sole α-vinyl sulfide products. The experimental conditions were optimized to allow the straightforward synthesis of a broad range of mono- and disubstituted α-adducts starting from terminal alkynes (18 examples) and thiols (5 examples). Altogether, the procedure devised in this study provides an easy access to α-vinyl sulfides with full atom economy and a low catalyst loading.
Disciplines :
Chemistry
Author, co-author :
Bołt, Małgorzata ;  Department of Organometallic Chemistry, Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89B, 61-614 Poznan, Poland. pkw@amu.edu.pl
Delaude, Lionel  ;  Université de Liège - ULiège > Molecular Systems (MolSys)
Żak, Patrycja ;  Department of Organometallic Chemistry, Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89B, 61-614 Poznan, Poland. pkw@amu.edu.pl
Language :
English
Title :
Rhodium catalysts with superbulky NHC ligands for the selective α-hydrothiolation of alkynes.
Publication date :
15 March 2022
Journal title :
Dalton Transactions
ISSN :
1477-9226
eISSN :
1477-9234
Publisher :
Royal Society of Chemistry, England
Volume :
51
Issue :
11
Pages :
4429-4434
Peer reviewed :
Peer reviewed
Funders :
Narodowe Centrum Nauki
Funding text :
The authors gratefully acknowledge the financial support from the National Science Centre (Poland) (SONATA Project No. UMO-2016/23/D/ST5/00417).
Available on ORBi :
since 12 April 2022

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