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Chemistry – A European Journal, ISSN 0947-6539, 07/2019, Volume 25, Issue 40, pp. 9341 - 9341
The cover picture provided by Alexander Ahrens from the group of A. S. K. Hashmi presents the results of their work on the gold‐catalysed cyclisation of... 
diphenylsulfoxide | gold | ynamides | diynes | cyclization
Journal Article
Chemical Communications, ISSN 1359-7345, 01/2014, Volume 50, Issue 5, pp. 593 - 595
We report a new, simple and air-stable iron(II) complex pre-catalyst for the synthesis of substituted pyridines via a [2+2+2] cycloaddition between diynes and... 
CORE | NITRILES | ALPHA,OMEGA-DIYNES | COMPLEXES | CATALYZED FORMATION | CYCLOTRIMERIZATION | CHEMISTRY, MULTIDISCIPLINARY | DIYNES | Diynes - chemistry | Pyridines - chemistry | Iron - chemistry | Nitriles - chemistry | Catalysis | Coordination Complexes - chemistry | Cycloaddition Reaction | Construction | Chemical Sciences
Journal Article
The Journal of Organic Chemistry, ISSN 0022-3263, 01/2005, Volume 70, Issue 2, pp. 703 - 706
Palladium-catalyzed terminal alkyne dimerization, through oxidative homocoupling, is a useful approach to the synthesis of symmetrical 1,4-diynes. Recent... 
CHEMISTRY, ORGANIC | ROUTE | DIYNES | ENYNES
Journal Article
Angewandte Chemie International Edition, ISSN 1433-7851, 11/2011, Volume 50, Issue 45, pp. 10694 - 10698
In the nick of time! The catalytic combination of [Ni(cod)2] (cod=1,5‐cyclooctadiene) and the ligand 4,5‐bis(diphenylphosphino)‐9,9‐dimethylxanthene (Xantphos)... 
nickel | cycloaddition | heterocycles | synthetic methods | alkynes | ENANTIOSELECTIVE SYNTHESIS | COMPLEXES | COOLIGOMERIZATION | 2 DIFFERENT ALKYNES | PYRIDINES | CHEMISTRY, MULTIDISCIPLINARY | LIGANDS | ALPHA,OMEGA-DIYNES | CONSTRUCTION | 1,6-DIYNES | CYCLOTRIMERIZATION | Molecular Structure | Catalysis | Cyclization | Nickel - chemistry | Diynes - chemistry | Nitriles - chemistry | nitriles | pyridines | catalyst | phosphine | diynes
Journal Article
Chemical Communications, ISSN 1359-7345, 2016, Volume 52, Issue 15, pp. 3187 - 3190
Gold-catalyzed [2+2+2]-cycloadditions of two discrete ynamides and one nitrile afford 2,4-diaminopyridine derivatives that are not readily prepared from... 
ENANTIOSELECTIVE SYNTHESIS | ALPHA,OMEGA-DIYNES | 2+2+2 CYCLOADDITIONS | INHIBITORS | PYRIDINES | RING-SYSTEMS | ALKYNES | CYCLOTRIMERIZATION | DERIVATIVES | CHEMISTRY, MULTIDISCIPLINARY | DIYNES
Journal Article
Journal of the American Chemical Society, ISSN 0002-7863, 09/2014, Volume 136, Issue 38, pp. 13174 - 13177
Gold-catalyzed oxidative cross-coupling of alkynes to unsymmetrical diynes has been achieved for the first time. A N,N-ligand (1,10-Phen) and PhI­(OAc)2 were... 
H FUNCTIONALIZATION | COMPLEXES | POLYSUBSTITUTED FURANS | EFFICIENT SYNTHESIS | REACTIVITY | OXIDANT | CONJUGATED DIYNES | REDUCTIVE ELIMINATION | ALKYNYLATION | CHEMISTRY, MULTIDISCIPLINARY | COPE-TYPE HYDROAMINATION | Gold - chemistry | Alkynes - chemistry | Catalysis | Oxidation-Reduction | Diynes - chemistry | Nitrogen | Gold compounds | Chemical properties
Journal Article
Organic Letters, ISSN 1523-7060, 08/2018, Volume 20, Issue 16, pp. 4950 - 4953
An original and mild synthetic route for the preparation of novel azafluorenones and derivatives via a ruthenium-mediated [2 + 2 + 2] cycloaddition of... 
2-AMINOPYRIDINES | ALPHA,OMEGA-DIYNES | CYANAMIDES | COMPLEXES | CHEMISTRY, ORGANIC | PYRIDINES | ALKYNES | ACCESS | NITRILE CYCLOTRIMERIZATION | COBALT | DIYNES | Organic chemistry | Chemical Sciences | Catalysis
Journal Article
SYNTHESIS-STUTTGART, ISSN 0039-7881, 06/2019, Volume 51, Issue 12, pp. 2532 - 2541
A novel synthetic method for the preparation of selenopyridine derivatives, involving a [ 2+ 2+ 2] cycloaddition of.,. -diynes and selenocyanates that is... 
DIARYL SELENIDES | CYANAMIDES | CHEMISTRY, ORGANIC | ALKYNES | ruthenium | 2-AMINOPYRIDINES | cycloaddition | pyridines | selenium | heterocycles | ALPHA,OMEGA-DIYNES | NITRILES | DIPHENYL DISELENIDE | CYCLOTRIMERIZATION | DIYNES
Journal Article
Journal of Ethnopharmacology, ISSN 0378-8741, 05/2013, Volume 147, Issue 1, pp. 232 - 237
Journal Article
Chemistry – A European Journal, ISSN 0947-6539, 06/2018, Volume 24, Issue 36, pp. 8917 - 8917
Diyne cross‐metathesis between 1,4‐bis(trimethylsilyl)‐1,3‐butadiyne and symmetrical 1,3‐diynes is catalyzed efficiently by the tungsten benzylidyne complex... 
synthesis | tungsten | diynes | alkylidyne complexes | alkyne metathesis
Journal Article
Chemical Communications: Chem Comm, ISSN 1359-7345, 02/2016, Volume 52, Issue 15, pp. 3187 - 3190
Gold-catalyzed [2+2+2]-cycloadditions of two discrete ynamides and one nitrile afford 2,4-diaminopyridine derivatives that are not readily prepared from... 
Nitriles | Construction | Derivatives | Catalysis | Catalysts
Journal Article
Organic Letters, ISSN 1523-7060, 08/2010, Volume 12, Issue 15, pp. 3450 - 3452
A fully intermolecular [2 + 2 + 2] cycloaddition of two enones and an alkyne has been achieved. This reaction proceeds stereoselectively to give one... 
COTRIMERIZATION | CHEMISTRY, ORGANIC | COUPLINGS | CO2 | DIYNES
Journal Article
Chemical Communications, ISSN 1359-7345, 09/2013, Volume 49, Issue 70, pp. 7735 - 7737
Several cycloaddition catalysts and reagents were surveyed for their effectiveness toward cyclizing alkynenitriles with cyanamides. Catalytic amounts of FeI2,... 
ALPHA,OMEGA-DIYNES | COMPLEXES | ISOCYANATES | 2+2+2 CYCLOADDITION | INHIBITORS | ALKYNES | CYCLOTRIMERIZATION | DERIVATIVES | CHEMISTRY, MULTIDISCIPLINARY | SUBSTITUTED PYRIDINES | DIYNES | Alkynes
Journal Article
Phytomedicine, ISSN 0944-7113, 08/2013, Volume 20, Issue 11, pp. 999 - 1006
Journal Article
Synlett, ISSN 0936-5214, 10/2019, Volume 30, Issue 16, pp. 1891 - 1894
Abstract A ruthenium-catalyzed [2+2+2] cycloaddition between α,ω-diynes and cyanamides is reported under microwave irradiation to access 2-aminopyridines. In... 
letter | CONVENIENT ACCESS | COMPLEXES | aminopyridines | CHEMISTRY, ORGANIC | PYRIDINES | diynes | ALKYNE CYCLOTRIMERIZATION REACTIONS | cyanamides | ruthenium | cycloaddition | HETEROCYCLES | ALPHA,OMEGA-DIYNES | CHEMISTRY | DERIVATIVES | microwave
Journal Article
Green Chemistry, ISSN 1463-9262, 2010, Volume 12, Issue 1, pp. 45 - 48
We report an environmentally friendly, efficient method for transforming terminal acetylenes into 1,3-diynes based on catalytic amounts of a Cu(II) salt and... 
SUPERCRITICAL CARBON-DIOXIDE | CHEMISTRY | CHEMISTRY, MULTIDISCIPLINARY | COUPLING REACTION | DIYNES
Journal Article
Organic Letters, ISSN 1523-7060, 02/2019, Volume 21, Issue 3, pp. 741 - 744
Intermolecular hydroalkylation of unactivated terminal alkenes with 1,3-diketones under neutral conditions has been achieved using a cationic iridium catalyst.... 
MECHANISM | ALPHA,OMEGA-DIYNES | PLATINUM(II) | CHEMISTRY, ORGANIC | OLEFINS | INTRAMOLECULAR HYDROALKYLATION | ASSISTED ALKYLATION | BETA-KETO-ESTERS | 2+2+2 CYCLOADDITION | STABILIZED CARBON NUCLEOPHILES | DIYNES
Journal Article
Angewandte Chemie International Edition, ISSN 1433-7851, 02/2016, Volume 55, Issue 8, pp. 2861 - 2865
2H‐azirines can serve as three‐atom synthons by C−C bond cleavage, however, it involves a high energy barrier under thermal conditions (>50.0 kcal mol−1).... 
ruthenium | cycloaddition | C−C activation | heterocycles | alkynes | C-C activation | ROUTE | VINYL AZIRIDINES | RING EXPANSION | PYRIDINES | CHEMISTRY, MULTIDISCIPLINARY | ALPHA,OMEGA-DIYNES | NITRILES | 1,6-DIYNES | DIYNES | Ruthenium | Carbon-carbon composites | Cleavage | Construction | Cycloaddition | Temperature effects
Journal Article