Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Svetlana Tšupova"'
Publikováno v:
Chemistry - A European Journal. 23:12259-12263
Various tetrayne systems were converted under dual gold-catalyzed conditions. For symmetric tetraalkynyl-substituted thiophenes, bearing two alkyl-substituted alkynes and two terminal alkyne units, bidirectional cyclizations led to the efficient form
Autor:
Svetlana Tšupova, Frank Rominger, Fabian Stuck, A. Stephen K. Hashmi, Matthias Rudolph, Alban Cadu, Joseph S. M. Samec
Publikováno v:
ChemCatChem. 9:1915-1920
Novel dialkynyl pyridines were synthesized and protected as alkyl salts for dual gold(I)-catalyzed cycloisomerization. Different alkyl groups and counter ions were screened for the salts, with benz ...
Publikováno v:
Chemistry - A European Journal. 23:5716-5721
A new pathway in dual gold-catalyzed reaction of thiophene-tethered diynes has been identified. A series of fully conjugated alkynyl-substituted benzothiophenes and benzofurans was obtained by a formal cyclisation/dimerization sequence. All the produ
Publikováno v:
Advanced Synthesis & Catalysis. 358:3999-4005
The nucleophilic addition of protected and substituted hydrazine derivatives to isonitrile complexes of gold(I), platinum(II), palladium(II) and rhodium(III) provides the corresponding hydrazino amino acyclic carbene complexes. These are characterize
Publikováno v:
Green Chemistry. 18:5800-5805
This study describes the use of hydroxymethylfurfural (HMF) as a precursor to phenols that are accessible within a few simple catalytic steps. A key step is an efficient transformation of HMF into its propargyl ether derivative under flow conditions.
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 23(50)
Various tetrayne systems were converted under dual gold-catalyzed conditions. For symmetric tetraalkynyl-substituted thiophenes, bearing two alkyl-substituted alkynes and two terminal alkyne units, bidirectional cyclizations led to the efficient form
Autor:
Frank Rominger, A. Stephen K. Hashmi, Matthias Rudolph, Max M. Hansmann, M. Sc. Svetlana Tšupova
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 22(45)
The reaction of thiophene-based diynes with dual-activation gold catalysts can provide cyclobutene derivatives or different polycycles by selective C-H insertion reactions. Also, the first σ,π-digold diyne complex was obtained in a stoichiometric r
Publikováno v:
Tetrahedron. 68:1011-1016
An efficient method for the synthesis of cyclic hydrazine derivatives starting from disubstituted hydrazines is reported. The method is based on the selective alkylation of hydrazine dianions with bromoalkenes and subsequent cyclization using Grubbs
Publikováno v:
Tetrahedron. 65:5438-5442
A novel method for the synthesis of cyclic hydrazine derivatives is reported. The new method for the generation of nitrogen-containing heterocycles is based on a polyanion strategy. The described method provides a convenient access to cyclic hydrazin