Amido‐Triazole Complexes, “Normal” Triazole‐Based Imines and Metallo‐Mesoionic Imines

ChemistryEurope, Journal Year: 2024, Volume and Issue: 3(1)

Published: Nov. 21, 2024

Abstract Mesoionic compounds are hugely popular in fields such as organic chemistry, organometallic chemistry and homogeneous catalysis. A new sub‐class the mesoionic imines (MIIs). We present here 5‐amino‐4‐pyridyl‐1,2,3‐triazole a versatile synthon for generating first examples of metallo‐MIIs. In this approach, we make use metallation at N‐pyridyl/N3‐triazole chelating pocket (instead quarternisation N3‐triazole) subsequent deprotonation to generate highly tunable These unprecedented metallo‐MIIs contain nucleophilic N‐donor site, electrophilic metal site. Apart from displaying strong directed H‐bonding interactions like their “classical” MII analogues, engage aromatic C−F activation well meta−C−H reactions. Facile synthesis homo heterodincuelar complexes which mixed coordinative saturation/unsaturation with these is presented. have also used precursor amido‐1,2,3‐triazole example “normal” (and not mesoionic) 1,2,3‐triazole based imine. Our results establish class that combine modularity click reactions, functionality fragments electronically ambivalent huge potential synthetic catalysis beyond.

Language: Английский

The Interplay of Cyclometalated-Ir and Mesoionic Imines: Stoichiometric and Catalytic Reactivities

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 22, 2024

Triazole-based mesoionic imines (MIIs) make up a new class of compounds that possess ambivalent electronic structures and unusual chemical reactivities. We present here two MIIs display strong intra- intermolecular hydrogen bonding. Whereas the former is responsible for selectivity C-H activation reactions in these molecules, latter strongly determines their UV-vis signatures. The cyclometalated iridium complexes with form either coordinatively unsaturated (with Mes substituents) or undergo dimerization (for Ph through "imine-N" atom MIIs. Cp*Ir-MII complex reacts several substrates such as PPh

Language: Английский

Leveraging N-exo Substituents to Tune Donor/Acceptor Properties of Mesoionic Imines (MIIs)

Dalton Transactions, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 27, 2024

In this work, we show two synthetic routes to substitute the N exo position of mesoionic imines (MIIs).

Language: Английский