- Exploring the Influence of Phosphine Ligation on the Gold-Catalyzed Hydrohydrazination of Terminal Alkynes at Room Temperature
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The synthesis and/or NMR/X-ray characterization of a new series of (L)AuCl complexes is reported, featuring BippyPhos, AdJohnPhos, silyl ether based ligands including OTips-DalPhos, and PAd-DalPhos. These complexes, along with previously reported analogue
- Rotta-Loria, Nicolas L.,Chisholm, Alicia J.,MacQueen, Preston M.,McDonald, Robert,Ferguson, Michael J.,Stradiotto, Mark
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supporting information
p. 2470 - 2475
(2017/07/17)
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- Sulphur promoted C(sp3)-C(sp2) cross dehydrogenative cyclisation of acetophenone hydrazones with aldehydes: Efficient synthesis of 3,4,5-trisubstituted 1H-pyrazoles
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A novel strategy for the cross dehydrogenative coupling (CDC) of acetophenone hydrazones and aldehydes has been developed for the synthesis of highly substituted pyrazoles. This work, for the first time, uses elemental sulfur as a promoter as well as a hydrogen acceptor in effecting the Csp3-Csp2 bond formation via C-H activation. This journal is
- Vanjari, Rajeshwer,Guntreddi, Tirumaleswararao,Kumar, Saurabh,Singh, Krishna Nand
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supporting information
p. 366 - 369
(2015/01/09)
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- Regioselective one-step synthesis of pyrazoles from alkynes and N-tosylhydrazones: [3+2] dipolar cycloaddition/[1,5] sigmatropic rearrangement cascade
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Rearrangement under control: A wide variety of 3,4,5- and 1,3,5-trisubstituted pyrazoles can be prepared from tosylhydrazones of ketones and terminal alkynes through the title reaction sequence (see scheme; Ts=4-toluenesulfonyl). The rearrangement, and th
- Pérez-Aguilar, M. Carmen,Valdés, Carlos
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supporting information
p. 7219 - 7223
(2013/07/26)
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- Anti-Bredt N-heterocyclic carbene: An efficient ligand for the gold(i)-catalyzed hydroamination of terminal alkynes with parent hydrazine
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An anti-Bredt N-heterocyclic carbene gold(i) chloride complex was synthesized by taking advantage of the reversible insertion of the free carbene into the NH bond of hexamethyldisilazane. This precatalyst promotes the parent hydrazine hydroamination of te
- Lopez-Gomez, Maria J.,Martin, David,Bertrand, Guy
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supporting information
p. 4483 - 4485
(2013/06/05)
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- Gold-catalyzed hydroamination of alkynes and allenes with parent hydrazine
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A diverse array of nitrogen-containing compounds were formed by the addition of hydrazine to alkynes, diynes, enynes, and allenes in the presence of cationic gold(I) complexes with a cyclic (alkyl)(amino)carbene ligand (see scheme; the X-ray crystal structure of the gold-hydrazine complex is shown). This hydroamination is an ideal initial step for the preparation of acyclic and heterocyclic bulk chemicals. Dipp=2,6-diisopropylphenyl. Copyright
- Kinjo, Rei,Donnadieu, Bruno,Bertrand, Guy
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supporting information; experimental part
p. 5560 - 5563
(2011/07/30)
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