Multiple annulations of inert C (sp 2)–H bonds with alkynes

A Saha, M Shankar, S Sau, AK Sahoo - Chemical Communications, 2022 - pubs.rsc.org
Transition-metal catalyzed directing group (DG) assisted annulation of inert C–H bonds
leads to the formation of complex molecular frameworks from readily accessible substrates …

LNL-Carbazole Pincer Ligand: More than the Sum of Its Parts

G Kleinhans, AJ Karhu, H Boddaert, S Tanweer… - Chemical …, 2023 - ACS Publications
The utility of carbazole in photo-, electro-, and medicinal applications has ensured its
widespread use also as the backbone in tridentate pincer ligands. In this review, the aim is …

Diverse reactivity of alkynes in C–H activation reactions

SK Banjare, PS Mahulkar, T Nanda, BV Pati… - Chemical …, 2022 - pubs.rsc.org
Alkynes occupy a prominent role as a coupling partner in the transition metal-catalysed
directed C–H activation reactions. Due to low steric requirements and linear geometry …

Switching the Reactivity of the Nickel-Catalyzed Reaction of 2-Pyridones with Alkynes: Easy Access to Polyaryl/Polyalkyl Quinolinones

N Prusty, SR Mohanty, SK Banjare, T Nanda… - Organic …, 2022 - ACS Publications
A Ni-catalyzed C6 followed by C5 cascade C–H activation/[2+ 2+ 2] annulation of 2-pyridone
with alkynes has been achieved. A change in the reaction pathway was achieved by tuning …

Transition Metal‐Catalyzed Dual C− H Activation/Annulation Reactions Involving Internal Alkynes

F Doraghi, MS Karimtabar, M Ghasemi… - The Chemical …, 2024 - Wiley Online Library
Recently, transition metal‐catalyzed ortho‐C− H bond activation/annulations involving two
internal alkyne molecules have been extensively used to synthesize highly substituted …

Ir (III)-Catalyzed Tandem Annulation of Aromatic Amides with 1, 6-Diynes via Dual C–H Bond Activation

SK Yadav, M Jeganmohan - Organic Letters, 2024 - ACS Publications
An Ir (III)-catalyzed annulation of aryl amides with 1, 6-diynes via ortho-as well as meta-dual
C–H bond activation reaction is reported. The scope of the annulation reaction was …

One-Pot Cascade Access to Ru(II)-Catalyzed Regioselective C(sp2)-H Activation/Alkenylation of Chromeno[4,3-c]pyrazol-4-ones and Their Emission Solvatochromic …

D Singla, K Paul - The Journal of Organic Chemistry, 2022 - ACS Publications
Herein, one-pot cascade synthesis of chromeno [4, 3-c] pyrazol-4-ones and their Ru (II)-
catalyzed regioselective ortho-alkenylation using imine as a weak directing group are done …

Nickel-catalyzed [2+ 2+ 2] benzannulation of alkynes: a new route to the synthesis of highly substituted naphthalenes

S Thavaselvan, K Parthasarathy - Organic & Biomolecular Chemistry, 2022 - pubs.rsc.org
The Ni (II)-catalyzed aromatic homologation of various directing groups with alkynes to
afford highly substituted naphthalene products via C–X bond cleavage followed by alkyne …

Nickel-Catalyzed Tandem Cyclization of 1, 6-Diynes with Indolines/Indoles through Dual C–H Bond Activation

SK Yadav, M Jeganmohan - The Journal of Organic Chemistry, 2023 - ACS Publications
A nickel-catalyzed site-selective tandem cyclization of 1, 6-diynes with substituted indolines
or indoles through consecutive dual C–H bond activation is described. In the reaction …

[HTML][HTML] Green solvent-controlled switchable synthesis of six-membered N-heterocycles and seven-membered O-heterocycles

L Wang, J Wang, X Wang, L Xu, FW Guo, XL Liu… - Green Synthesis and …, 2024 - Elsevier
The BF 3· OEt 2 promoted switchable synthesis of six-membered N-heterocycles and seven-
membered O-heterocycles from readily available feedstocks was developed by the …