1032196-83-0Relevant academic research and scientific papers
A new class of N-doped ionic PAHs: Via intramolecular [4+2]-cycloaddition between arylpyridines and alkynes
Mule, Ravindra D.,Shaikh, Aslam C.,Gade, Amol B.,Patil, Nitin T.
, p. 11909 - 11912 (2018)
Reported herein, for the first time, is a copper-promoted intramolecular [4+2]-cycloaddition cascade to access ionic N-doped polycyclic aromatic hydrocarbons (PAHs) with tunable emission wavelengths. It is shown that the reaction can be made catalytic with respect to Cu(OTf)2 when an external oxidant, Selectfluor, was used.
An alternative approach to aldol reactions: Gold-catalyzed formation of boron enolates from alkynes
Koerner, Cindy,Starkov, Pavel,Sheppard, Tom D.
, p. 5968 - 5969 (2010)
A new method for enolate generation via the gold-catalyzed addition of boronic acids to alkynes is reported. The formation of boron enolates from readily accessible ortho-alkynylbenzeneboronic acids proceeds rapidly with 2 mol % PPh3AuNTf2
Oxidative Intramolecular 1,2-Amino-Oxygenation of Alkynes under AuI/AuIIICatalysis: Discovery of a Pyridinium-Oxazole Dyad as an Ionic Fluorophore
Shaikh, Aslam C.,Ranade, Dnyanesh S.,Rajamohanan, Pattuparambil R.,Kulkarni, Prasad P.,Patil, Nitin T.
supporting information, p. 757 - 761 (2017/01/14)
Oxidative intramolecular 1,2-amino-oxygenation reactions, combining gold(I)/gold(III) catalysis, is reported. The reaction provides efficient access to a structurally unique ionic pyridinium-oxazole dyad with tunable emission wavelengths. The application of these fluorophores as potential biomarkers has been investigated.
Gold(I)-catalyzed 6-endo hydroxycyclization of 7-substituted-1,6-enynes
Sanjuan, Ana M.,Martinez, Alberto,Garcia-Garcia, Patricia,Fernandez-Rodriguez, Manuel A.,Sanz, Roberto
supporting information, p. 2242 - 2249 (2014/01/06)
The cyclization of o-(alkynyl)-3-(methylbut-2-enyl)benzenes, 1,6-enynes having a condensed aromatic ring at C3-C4 positions, has been studied under the catalysis of cationic gold(I) complexes. The selective 6-endo-dig mode of cyclization observed for the
A practical, one-pot synthesis of highly substituted thiophenes and benzo[b]thiophenes from bromoenynes and o-alkynylbromobenzenes
Guilarte, Veronica,Fernandez-Rodriguez, Manuel A.,Garcia-Garcia, Patricia,Hernando, Elsa,Sanz, Roberto
supporting information; experimental part, p. 5100 - 5103 (2011/11/29)
An efficient synthesis of thiophenes and benzo[b]thiophenes has been developed from easily available bromoenynes and o-alkynylbromobenzene derivatives. This novel one-pot procedure involves a Pd-catalyzed C-S bond formation using a hydrogen sulfide surrogate followed by a heterocyclization reaction. Moreover, in situ functionalization with selected electrophiles further expands the potential of this methodology to the preparation of the corresponding highly substituted sulfur heterocycles.
Copper-catalysed bromoalkynylation of arynes
Morishita, Takami,Yoshida, Hiroto,Ohshita, Joji
supporting information; experimental part, p. 640 - 642 (2010/05/01)
Arynes were found to be inserted into a C(sp)-Br σ-bond of bromoalkynes in the presence of a copper catalyst, giving (alkynyl)bromoarenes in a straightforward manner.
