Results 171 to 180 of about 9,389 (255)

Kinetically E-selective macrocyclic ring-closing metathesis. [PDF]

Nature, 2017
Shen X, Nguyen TT, Koh MJ, Xu D, Speed AW, Schrock RR, Hoveyda AH.   +6 more
europepmc   +1 more source

A Crystalline Ylide‐Stabilized Stibenium Cation

European Journal of Inorganic Chemistry, Volume 29, Issue 17, 17 June 2026.
The isolation of a stibenium cation stabilized by two thiophosphinoyl‐tethered ylide groups is reported. The cation is accessible via salt metathesis of the metalated ylide with SbCl3 and features CSb single bonds, with lone pairs remaining localized at the ylidic carbon atoms.
Daniel Knyszek, Margarita Shishkova, Leif Kelling, Henning Steinert, Viktoria H. Gessner   +4 more
wiley   +1 more source

Novel tandem ring-opening/ring-closing metathesis reactions of functionalized cyclohexenoids derived from (−)-alpha-pinene

, 2002
The cyclohexenone (+)-2, readily obtained from (−)-alpha-pinene 1 was elaborated to (+)-3 in an attempt to construct the AB rings of taxoids employing the ring-closure metathesis (RCM) reaction as the key step.
Nandakumar, Jayakrishnan, Mehta, Goverdhan   +1 more
core  

Synthetic Approach to the ABCD Ring System of Anticancer Agent Fredericamycin A via Claisen Rearrangement and Ring-Closing Metathesis as Key Steps. [PDF]

ACS Omega, 2019
Kotha S, Cheekatla SR, Fatma A.
europepmc   +1 more source

Hydrogen Isotope Exchange in Pyridine Catalyzed by an Iron(II) Imido Complex: Counterion‐Directed Regioselectivity

Angewandte Chemie, Volume 138, Issue 24, 8 June 2026.
Anionic high‐spin iron(II) imido complexes are catalysts for the hydrogen isotope exchange (HIE) reaction with pyridine as the substrate. The alkali metal counter‐cation plays critical roles in activating the substrate and facilitating deuteration. These complexes catalyze site‐selective α‐, α,β,γ‐, and β,γ‐deuteration of pyridine, where the counter ...
Bin Feng, Guorong Li, Yafei Gao, Nobuyuki Yamamoto, Maren Pink, Qian Peng, Jeremy M. Smith   +6 more
wiley   +2 more sources

Novel Cyclic Biphalin Analogues by Ruthenium-Catalyzed Ring Closing Metathesis: in Vivo and in Vitro Biological Profile. [PDF]

ACS Med Chem Lett, 2019
Stefanucci A, Lei W, Pieretti S, Dimmito MP, Luisi G, Novellino E, Nowakowski M, Koźmiński W, Mirzaie S, Zengin G, Streicher JM, Mollica A.   +11 more
europepmc   +1 more source

From [NHC─H]• to Persistent σ‐Complex Radicals: Photoinduced Radical Chemistry of Imidazolium Salts

Angewandte Chemie, Volume 138, Issue 24, 8 June 2026.
Visible‐light excitation of electron donor–acceptor (EDA) complexes between imidazolium salts and triarylamines enables controlled single‐electron transfer (SET) and reveals a family of carbene‐centered σ‐complex radical cations. Cryogenic electron paramagnetic resonance (EPR) captures the elusive [NHC─H]• intermediate and its thermal evolution into ...
Filipp M. Kolomeychuk, Lars J. C. van der Zee, Simon Mathew, Bas de Bruin, J. Chris Slootweg   +4 more
wiley   +2 more sources

In Situ-Generated Niobium-Catalyzed Synthesis of 3-Pyrroline Derivatives via Ring-Closing Metathesis Reactions. [PDF]

ACS Omega, 2018
Fuji M, Chiwata J, Ozaki M, Aratani S, Obora Y.   +4 more
europepmc   +1 more source

Synthesis and Reactivity of Extremely Electron‐Poor Au(III) Complexes Bearing OTf− or NTf2− Ligands

Chemistry – A European Journal, Volume 32, Issue 22, 9 June 2026.
A new family of electron‐poor Au(III) cations bearing bistriflimide or triflate ligands is reported. These cations can undergo direct C─H metalation with simple arenes to give mono‐aryl cations. Subsequent addition of simple halide sources allows for reductive elimination of aryl halides, formally from Ar─H and X−. ABSTRACT The synthesis and structural
Lachlan Barwise, Emily Mulhallen‐Graham, Lachlan J. Moon, Lachlan Sharp‐Bucknall, Miracle I. Ekavhiare, Keith F. White, Jason L. Dutton   +6 more
wiley   +1 more source

Supramolecular polymerization of a ureidopyrimidinone-based [2]catenane prepared via ring-closing metathesis. [PDF]

J Polym Sci A Polym Chem, 2017
Teunissen AJP, Berrocal JA, Corbet CHWA, Meijer EW.   +3 more
europepmc   +1 more source