Catalysts for Isocyanate Cyclotrimerization

Y Guo, M Muuronen, F Lucas, RP Sijbesma… - …, 2023 - Wiley Online Library
The formation of isocyanurate via cyclotrimerization of isocyanates is widely reported to
provide a variety of polyurethane materials with improved chemical and physical properties …

Conservative evolution and industrial metabolism in Green Chemistry

G Náray-Szabó, LT Mika - Green Chemistry, 2018 - pubs.rsc.org
To date, chemistry has provided more than a hundred million new compounds, most of
which are non-natural species that have never existed before and are a source of an …

Preorganized frustrated Lewis pairs

F Bertini, V Lyaskovskyy, BJJ Timmer… - Journal of the …, 2012 - ACS Publications
Geminal frustrated Lewis pairs (FLPs) are expected to exhibit increased reactivity when the
donor and acceptor sites are perfectly aligned. This is shown for reactions of the …

Cyclo-oligomerization of isocyanates with Na (PH 2) or Na (OCP) as “P−” anion sources

D Heift, Z Benkő, H Grützmacher, AR Jupp… - Chemical …, 2015 - pubs.rsc.org
We show that the 2-phosphaethynolate anion, OCP−, is a simple and efficient catalyst for the
cyclotrimerization of isocyanates. This process proceeds step-wise and involves five …

New Insights in Frustrated Lewis Pair Chemistry with Azides

DHA Boom, AR Jupp, M Nieger… - … A European Journal, 2019 - Wiley Online Library
The geminal frustrated Lewis pair (FLP) tBu2PCH2BPh2 (1) reacts with phenyl‐, mesityl‐,
and tert‐butyl azide affording, respectively, six, five, and four‐membered rings as isolable …

Aluminium-catalysed isocyanate trimerization, enhanced by exploiting a dynamic coordination sphere

MA Bahili, EC Stokes, RC Amesbury… - Chemical …, 2019 - pubs.rsc.org
Main-group metals are inherently labile, hindering their use in catalysis. We exploit this
lability in the synthesis of isocyanurates. For the first time we report a highly active catalyst …

Cyclotrimerisation of isocyanates catalysed by low-coordinate Mn (II) and Fe (II) m-terphenyl complexes

HR Sharpe, AM Geer, HEL Williams… - Chemical …, 2017 - pubs.rsc.org
Cyclotrimerisation of isocyanates catalysed by low-coordinate Mn( ii ) and Fe( ii ) m -terphenyl
complexes - Chemical Communications (RSC Publishing) DOI:10.1039/C6CC07243G Royal …

Hemicellulosic Sugars and Lignin: A Synergistic Combination for the Synthesis of High-Performance Bioresins

PG Falireas, AA Wróblewska, K Servaes… - ACS Sustainable …, 2023 - ACS Publications
To render biorefineries economically viable, it is important to maximize the value of all of the
processed lignocellulosic biomass. However, the hemicellulose fraction is often overlooked …

Twofold electrochemical amination of naphthalene and related arenes

S Möhle, S Herold, F Richter, H Nefzger… - …, 2017 - Wiley Online Library
The twofold electrochemical amination reaction of polycyclic arenes, such as naphthalene
(4), via Zincke intermediates is demonstrated for the first time. The installation of nitrogen …

Synthesis and structure investigation of hexamethylene diisocyanate (HDI)-based polyisocyanates

J Hu, Z Chen, Y He, H Huang, X Zhang - Research on Chemical …, 2017 - Springer
Solvent-free hexamethylene diisocyanate (HDI)-based polyisocyanates were prepared by
cyclotrimerization of HDI monomer using tri-n-butylphosphine (TBP) as a catalyst, and …