✦ LIBER ✦

Organocalcium Compounds with Catalytic Activity for the Ring-Opening Polymerization of Lactones

✍ Scribed by Matthias Westerhausen; Stefan Schneiderbauer; Alexander N. Kneifel; Yvonne Söltl; Peter Mayer; Heinrich Nöth; Zhiyuan Zhong; Pieter J. Dijkstra; Jan Feijen

Publisher: John Wiley and Sons
Year: 2003
Tongue: English
Weight: 174 KB
Volume: 2003
Category: Article
ISSN: 1434-1948
DOI: 10.1002/ejic.200300286

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Reactivity of Sm(II) compounds as ring-o

Reactivity of Sm(II) compounds as ring-opening polymerization initiators for lactones

✍ Seema Agarwal; Natalia E. Brandukova-Szmikowski; Andreas Greiner 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 64 KB 👁 2 views

Successful room temperature ring-opening polymerization (ROP) of e-caprolactone and d-valerolactone has been carried out using SmX 2 (X = I, Br, and cyclopentadienyl (Cp)) catalysts. SmI 2 in the presence of metallic Sm was found to have enhanced reactivity as room temperature ROP initiator for lact

Reactions of ϵ-Caprolactone with (Alkyne

Reactions of ϵ-Caprolactone with (Alkyne)zirconocene Complexes: Investigation of Elemental Steps in Catalytic Ring-Opening Polymerization of Lactones

✍ Dominique Thomas; Perdita Arndt; Normen Peulecke; Anke Spannenberg; Rhett Kempe; 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 551 KB

ε-

Synthesis and Characterization of Homole

Synthesis and Characterization of Homoleptic Lanthanide Guanidinate Complexes and Their Catalytic Activity for the Ring-Opening Polymerization of Trimethylene Carbonate

✍ Liying Zhou; Yingming Yao; Yong Zhang; Mingqiang Xue; Jinglei Chen; Qi Shen 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 134 KB

## Abstract Two methods to synthesize homoleptic guanidinate lanthanide complex are described. The samarium guanidinate complex [Sm{Ph~2~NC(NCy)~2~}~3~]·2C~7~H~8~ (1) can be synthesized by the metathesis reaction of lithium guanidinate with anhydrous samarium trichloride in a 3:1 molar ratio. The a

Effect of Cocatalysts on the Catalytic A

Effect of Cocatalysts on the Catalytic Activities of Tantalum- and Niobium-Based Catalysts for Ring-Opening Metathesis Polymerization of Norbornene

✍ Yuushou Nakayama; Masaya Tanimoto; Takeshi Shiono 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 128 KB

## Abstract A series of pentavalent tantalum and niobium complexes with aryloxy ligands was prepared, and their catalytic behavior for the ROMP of norbornene was studied in the presence of an alkylaluminum cocatalyst. Tantalum complexes **1**–**4** showed very high activity for the ROMP of NBE in c

Lithium chloride as catalyst for the rin

Lithium chloride as catalyst for the ring-opening polymerization of lactide in the presence of hydroxyl-containing compounds

✍ Wenhua Xie; Depu Chen; Xiaohong Fan; Jun Li; Peng George Wang; H. N. Cheng; Robe 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 135 KB 👁 2 views

Lithium chloride was found to be an effective and biocompatible catalyst for the ring-opening polymerization of lactide in the presence of hydroxyl-containing compounds. Ethylene glycol (EG) and methyl ␣-D-glucopyranoside (MGlc) were used as multifunctional initiators. The polymerization was carried

A single active site metal center of neo

A single active site metal center of neodymocene chloride for the ring-opening polymerization of ε-caprolactone

✍ Weifeng Hou; Jin Chen; Xiaoli Yan; Zuyun Shi; Junquan Sun 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 216 KB 👁 2 views

A germyl-bridged lanthanocene chloride, Me 2 Ge( t Bu-C 5 H 3 ) 2 LnCl (Ln ¼ Nd; (Cat-Nd), was prepared and successfully used as single catalyst to initiate the ringopening polymerization of e-caprolactone (e-CL) for the first time. Under mild conditions (60 C,[e-CL]/[Ln] ¼ 200, 4 h), Cat-Nd efficie