Molybdenum Pentachloride Mediated Synthesis of Spirocyclic Compounds by Intramolecular Oxidative Coupling

2015 ◽  
Vol 2016 (1) ◽  
pp. 60-63 ◽  
Author(s):  
Moritz Schubert ◽  
Kathrin Wehming ◽  
Anton Kehl ◽  
Martin Nieger ◽  
Gregor Schnakenburg ◽  
...  
Keyword(s):  
Oxidative Coupling ◽  
Molybdenum Pentachloride ◽  
Spirocyclic Compounds

ChemInform Abstract: Molybdenum Pentachloride Mediated Synthesis of Spirocyclic Compounds by Intramolecular Oxidative Coupling.

ChemInform ◽  
2016 ◽  
Vol 47 (21) ◽  
Author(s):  
Moritz Schubert ◽  
Kathrin Wehming ◽  
Anton Kehl ◽  
Martin Nieger ◽  
Gregor Schnakenburg ◽  
...  
Keyword(s):  
Oxidative Coupling ◽  
Molybdenum Pentachloride ◽  
Spirocyclic Compounds

Modular Access to 9,9-Spirobifluorenes by Oxidative Coupling Using Molybdenum Pentachloride

Synthesis ◽  
2013 ◽  
Vol 45 (09) ◽  
pp. 1160-1164 ◽  
Author(s):  
Siegfried Waldvogel ◽  
Simon Trosien ◽  
Dieter Schollmeyer
Keyword(s):  
Oxidative Coupling ◽  
Molybdenum Pentachloride

ChemInform Abstract: Modular Access to 9,9-Spirobifluorenes by Oxidative Coupling Using Molybdenum Pentachloride.

ChemInform ◽  
2013 ◽  
Vol 44 (32) ◽  
pp. no-no
Author(s):  
Simon Trosien ◽  
Dieter Schollmeyer ◽  
Siegfried R. Waldvogel
Keyword(s):  
Oxidative Coupling ◽  
Molybdenum Pentachloride

An Unprecedented Cyano-Induced Sodium Nitrite-Catalyzed C(sp3)-H and C(sp2)-H Coupling Reaction

2018 ◽  
Vol 15 (7) ◽  
pp. 989-994 ◽  
Author(s):  
Ling Li ◽  
Bo Su ◽  
Yuxiu Liu ◽  
Qingmin Wang
Keyword(s):  
Sodium Nitrite ◽  
Oxidative Coupling ◽  
High Resolution Mass Spectrometry ◽  
Coupling Reaction ◽  
13C Nmr Spectroscopy ◽  
Coupling Reactions ◽  
Reaction Conditions ◽  
1H And 13C Nmr ◽  
Oxidative Coupling Reaction ◽  
Oxidative Coupling Reactions

Aim and Objective: During the investigation of sodium nitrite-catalyzed oxidative coupling reaction of aryls, an unprecedented C(sp2)-H and C(sp3)-H coupling of substituted 2-aryl acetonitrile was found. Materials and Methods: The structure of the coupled product was confirmed by 1H and 13C NMR spectroscopy and high-resolution mass spectrometry (HRMS), and comparison of its derivatives with known compounds. The effects of methoxy group in the benzene ring on the reaction were evaluated. Results: The optimized reaction conditions are summarized as follows: CF3SO3H/substrate = 1.5 equiv., NaNO2/substrate = 0.3 equiv., CH3CN as solvent. 2-(4-Methoxyphenyl)acetonitrile and 2-(3,4,5- trimethoxyphenyl)acetonitrile could also generate C(sp2)-H and C(sp3)-H coupling. The coupling reaction occurred as a typical radial mechanism. Conclusion: An unprecedented cyano-induced, NaNO2-catalyzed oxidative C(sp3)-H and C(sp2)-H coupling was reported. The reaction proceeded under very mild conditions, using O2 in the air as terminal oxidant. The unique oxidative manner might provide more inspiration for the development of intriguing oxidative coupling reactions.

scholarly journals Identification of the structure of the Bi promoted Pt non-oxidative coupling of methane catalyst: a nanoscale Pt3Bi intermetallic alloy

2019 ◽  
Vol 9 (6) ◽  
pp. 1349-1356 ◽  
Author(s):  
Johnny Zhu Chen ◽  
Zhenwei Wu ◽  
Xiaoben Zhang ◽  
Slgi Choi ◽  
Yang Xiao ◽  
...  
Keyword(s):  
Oxidative Coupling ◽  
Oxidative Coupling Of Methane ◽  
Intermetallic Alloy ◽  
Alloy Catalyst

Identification of a Pt3Bi nanoscale, surface intermetallic alloy catalyst for non-oxidative coupling of methane (NOCM).

Amino acid derived CuII compounds as catalysts for asymmetric oxidative coupling of 2-naphthol

2015 ◽  
Vol 44 (4) ◽  
pp. 1612-1626 ◽  
Author(s):  
Pedro Adão ◽  
Sónia Barroso ◽  
M. Fernanda N. N. Carvalho ◽  
Carlos M. Teixeira ◽  
Maxim L. Kuznetsov ◽  
...  
Keyword(s):  
Amino Acid ◽  
Oxidative Coupling ◽  
Product Yields ◽  
Aqueous Conditions

Several chiral amino acid-derived CuII complexes were prepared and used as catalysts in the aerobic oxidative coupling of 2-naphthol. Moderate homocoupling product yields and enantiomeric excesses were obtained under mild, aqueous conditions.

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