Results 131 to 140 of about 46,706 (268)

Researches on indoles. Part VIII. 3-hydroxymethyl indole-2-carboxylic acid lactone

, 1938
Rita Harriet Harradence, Francis Lions
openalex   +2 more sources

Naturally Occurring Lactones and Lactames. III. The Absolute Configuration of the Hydroxycitric Acid Lactones: Hibiscus Acid and Garcinia Acid. [PDF]

, 1969
Per M. Boll, Else Sørensen, Erik Balieu, Olof Theander, Alf A. Lindberg, Gert Jansen, Bo Lamm, Benny Samuelsson   +7 more
openalex   +1 more source

Recycling of Polyurethane via Mechanocatalytic Methanolysis/Hydrolysis

ChemSusChem, Volume 18, Issue 12, June 17, 2025.
In this study, it is shown that up to 86% of soluble polyol can be recovered from the hydrolysis of polyurethane using a ball milling‐assisted process below 100 °C in the presence of NaOH, a small amount of H2O and a Cu/MgAlOx co‐catalyst. Polyurethane (PU) is the 6th most produced plastic on a global basis, and thus one of the most important targets ...
Bolun Wang, Joel Britschgi, Nguyen Khang Tran, Ivana Jevtovikj, Piyush Ingale, Cansu Mai, Stephan Andreas Schunk, Ferdi Schüth   +7 more
wiley   +1 more source

Preparation of Optically Active γ- and δ-Lactones by Microbiological Reduction of the Corresponding Keto Acids [PDF]

, 1963
G. Tuynenburg Muys, B. van der Ven, A. P. de Jonge   +2 more
openalex   +1 more source

N,N‐Dimethylhydrazine as a Reversible Derivatization Agent to Promote the Hydroxymethylation of Furfural with Formaldehyde

ChemSusChem, Volume 18, Issue 12, June 17, 2025.
The reversible derivation of the –CHO group of furfural with N,N‐Dimethylhydrazine not only restores the nucleophilicity of the furan ring toward formaldehyde but also opens an alternative mechanism to the classical acid‐catalyzed pathway for the selective hydroxymethylation of the furanic ring of furfural.
Sarah Behloul, Zhen Yan, Karine De Oliveira Vigier, Frederic Guégan, François Jérôme   +4 more
wiley   +1 more source

Highly Isoselective Polymerization of rac‐Lactide by Zinc Complexes of Sequential Tetradentate {ONNN} Ligands

ChemSusChem, EarlyView.
Zinc complexes of a new family of sequential {ONNN} ligands are introduced and employed for the ring‐opening polymerization of rac‐lactide. The pyridine‐amine‐imine‐phenolate complexes lead to a rare combination of very high activities and isoselectivities yielding stereomultiblock poly(lactic acid) while their isomers are less active and essentially ...
Inbar Kremer‐Shitrit, Inbar Zaltsman, Sophia Lipstman, Debashis Chakraborty, Moshe Kol   +4 more
wiley   +1 more source

Stereocontrolled synthesis of 3-hydroxy-2-piperidinone carboxamides by catalytic ring-opening aminolysis of bridged <i>δ</i>-lactam-γ-lactones. [PDF]

RSC Adv
Beng TK, Curry K, Gitonga A, Yu K, Edwards S.   +4 more
europepmc   +1 more source

From Spirocyclic Germanium Alkoxides to their Fluorido Germanates

European Journal of Inorganic Chemistry, EarlyView.
Spirocyclic germanium salicyl alcoholates potentially meet the requirement as molecular precursors for twin polymerization, which is defined as a concerted formation of two polymeric materials from a so‐called twin monomer. Two examples of such germanium alkoxides and their associated fluorido germanates are reported and aspects of their chirality and ...
Philipp Kitschke, Sebastian Scholz, Felix Roschke, Adrien Schäfer, Tobias Rüffer, Heinrich Lang, Alexander A. Auer, Michael Mehring   +7 more
wiley   +1 more source

Synthesis of bicyclo[3.2.0]heptane lactones <i>via</i> a ligand-enabled Pd-catalyzed C(sp³)-H activation cascade. [PDF]

Chem Sci
Fan Z, Cai X, Sheng T, Yu JQ.
europepmc   +1 more source

Acyclic Diene Metathesis Polymerization Approach for Synthesis of Biobased Polyesters: Summary of Recent Reports

European Journal of Lipid Science and Technology, EarlyView.
The synthesis of biobased polyesters, including soluble polymer networks, displaying better tensile properties beyond polyolefins by adopting ADMET polymerization, and the post‐modification for preparation of the multiblock copolymers and the composite have been reviewed.
Mohamed Mehawed Abdellatif, Kotohiro Nomura   +1 more
wiley   +1 more source