Transition metal vinylidene-and allenylidene-mediated catalysis in organic synthesis

SW Roh, K Choi, C Lee - Chemical Reviews, 2019 - ACS Publications
With their mechanistic novelty and various modalities of reactivity, transition metal
unsaturated carbene (alkenylidene) complexes have emerged as versatile intermediates for …

Ruthenium-catalyzed cycloisomerization of 2-alkynylanilides: synthesis of 3-substituted indoles by 1, 2-carbon migration

T Watanabe, Y Mutoh, S Saito - Journal of the American Chemical …, 2017 - ACS Publications
Ruthenium-Catalyzed Cycloisomerization of 2-Alkynylanilides: Synthesis of 3-Substituted
Indoles by 1,2-Carbon Migration | Journal of the American Chemical Society Recently …

[HTML][HTML] Merging gold catalysis and haloethynyl frames: Emphasis on halide-shift processes

P Fernandez-Canelas, P Barrio, JM Gonzalez - Tetrahedron Letters, 2022 - Elsevier
Haloalkynes can enter a wide variety of metal-catalyzed transformation giving rise to the
formation of products with or without showing halide-shift. This article offers an overall view …

Iron/Photosensitizer-Catalyzed Directed C–H Activation Triggered by the Formation of an Iron Metallacycle

Y Kato, T Yoshino, S Matsunaga - ACS Catalysis, 2023 - ACS Publications
C–H functionalization reactions catalyzed by iron, the most abundant transition metallic
element in the Earth's crust, are one of the ideal synthetic methods. However, there are a …

Controlling Chemoselectivity in Ruthenium (II)‐Induced Cyclization of Aniline‐Functionalized Alkynes

KW Io, HL Shek, TY Li, KK Li, DSH Chan… - … A European Journal, 2024 - Wiley Online Library
The cyclization of heteroatom‐functionalized alkynes induced by d6‐transition‐metal
centers has traditionally been associated with the vinylidene pathway. However, recent …

DFT Study of Internal Alkyne-to-Disubstituted Vinylidene Isomerization in [CpRu(PhCCAr)(dppe)]+

M Otsuka, N Tsuchida, Y Ikeda, Y Kimura… - Journal of the …, 2012 - ACS Publications
Internal alkyne-to-vinylidene isomerization in the Ru complexes ([CpRu (η2-PhC CC6H4R-
p)(dppe)]+(Cp= η5-C5H5; dppe= Ph2PCH2CH2PPh2; R= OMe, Cl, CO2Et)) has been …

Computational discovery of stable transition-metal vinylidene complexes

OJS Pickup, I Khazal, EJ Smith, AC Whitwood… - …, 2014 - ACS Publications
Experimental results have long suggested that catalyst optimization is an inherently
multivariate process, requiring the screening of reaction conditions (temperature, pressure …

Synthesis of lactone-fused pyrroles by ruthenium-catalyzed 1, 2-carbon migration-cycloisomerization

T Watanabe, Y Mutoh, S Saito - Organic & Biomolecular Chemistry, 2020 - pubs.rsc.org
A ruthenium-catalyzed cycloisomerization of 3-amino-4-alkynyl-2H-chromen-2-ones via 1, 2-
carbon migration was developed. Various 1-arylchromeno [3, 4-b] pyrrol-4 (3H)-ones were …

Transition metal complexes of heavier vinylidenes: allylic coordination vs vinylidene–alkyne rearrangement at nickel

PK Majhi, M Zimmer, B Morgenstern… - Journal of the …, 2021 - ACS Publications
Transition metal π-allyl complexes are key reagents/intermediates of various catalytic and
stoichiometric allylation reactions. We now report the first transition metal complex of a …

Ruthenium‐Catalyzed Cycloisomerization of 2‐Alkynylstyrenes via 1, 2‐Carbon Migration That Leads to Substituted Naphthalenes

T Watanabe, H Abe, Y Mutoh… - Chemistry–A European …, 2018 - Wiley Online Library
A ruthenium‐catalyzed carbocyclization of 2‐alkynylstyrenes that involves a very rare 1, 2‐
carbon migration of internal alkynes is reported. Various 1, 2‐di‐and 1, 4, 7‐trisubstituted …