Titanium catalysis for the synthesis of fine chemicals–development and trends

M Manßen, LL Schafer - Chemical Society Reviews, 2020 - pubs.rsc.org
Titanium is the second most abundant transition metal and is already a key player in
important industrial processes (eg polyethylene). Titanium is an attractive metal to use for …

Modern applications of low-valent early transition metals in synthesis and catalysis

EP Beaumier, AJ Pearce, XY See… - Nature Reviews Chemistry, 2019 - nature.com
Low-valent early transition metals are often intrinsically highly reactive as a result of their
strong propensity toward oxidation to more stable high-valent states. Harnessing these …

Pd-Catalyzed Triple-Fold C(sp2)–H Activation with Enaminones and Alkenes for Pyrrole Synthesis via Hydrogen Evolution

L Fu, Y Liu, JP Wan - Organic Letters, 2021 - ACS Publications
The synthesis of NH-free pyrroles via Pd-catalyzed annulation of enaminones and alkenes
is reported. With the catalysis of Pd (II), the activation of triple C (sp2)–H bonds, including …

Transformation of chitin and waste shrimp shells into acetic acid and pyrrole

X Gao, X Chen, J Zhang, W Guo, F **… - … Sustainable Chemistry & …, 2016 - ACS Publications
Global shellfishery waste generation is from 6 to 8 million metric tons annually. Chitin, as a
major component in crustacean shells, is the second most abundant biopolymer on Earth …

A research agenda for transforming separation science

National Academies of Sciences, Life Studies… - 2019 - books.google.com
Separation science plays a critical role in maintaining our standard of living and quality of
life. Many industrial processes and general necessities such as chemicals, medicines, clean …

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 …

Trimethylsilyl‐Protected Alkynes as Selective Cross‐Coupling Partners in Titanium‐Catalyzed [2+ 2+ 1] Pyrrole Synthesis

HC Chiu, IA Tonks - Angewandte Chemie International Edition, 2018 - Wiley Online Library
Trimethylsilyl (TMS)‐protected alkynes served as selective alkyne cross‐coupling partners
in titanium‐catalyzed [2+ 2+ 1] pyrrole synthesis. Reactions of TMS‐protected alkynes with …

Multicomponent pyrazole synthesis from alkynes, nitriles, and titanium imido complexes via oxidatively induced N–N bond coupling

AJ Pearce, RP Harkins, BR Reiner… - Journal of the …, 2020 - ACS Publications
Pyrazoles are an important class of heterocycles found in a wide range of bioactive
compounds and pharmaceuticals. Pyrazole synthesis often requires hydrazine or related …

Ti-Catalyzed and-Mediated Oxidative Amination Reactions

IA Tonks - Accounts of chemical research, 2021 - ACS Publications
Conspectus Titanium is an attractive metal for catalytic reaction development: it is earth-
abundant, inexpensive, and generally nontoxic. However—like most early transition metals …

Modular domino process toward highly functionalized pyrroles via Pd-catalyzed [4+ 1] annulation under mild conditions

L Zuo, Y Yang, W Guo - Organic Letters, 2021 - ACS Publications
A Pd-catalyzed decarboxylative approach for the modular synthesis of highly functionalized
pyrroles is presented. This protocol utilizes readily available cyclic carbonates and amines …