A new route to α,ω-diamines from hydrogenation of dicarboxylic acids and their derivatives in the presence of amines
作者:Yiping Shi、Paul C. J. Kamer、David J. Cole-Hamilton
DOI:10.1039/c7gc02838e
日期:——
A new and selective route for the synthesis of polymer precursors, primary diamines or N-substituted diamines, from dicarboxylic acids, diesters, diamides and diols using a Ru/ triphos catalyst is reported. Excellent conversions and yields are obtained under optimised reaction conditions. The reactions worked very well using 1,4-dioxane as solvent, but the greener solvent, 2-methyl tetrahydrofuran
Phosphonate Ester Derivatives and Methods of Synthesis Thereof
申请人:Ware Roy W.
公开号:US20120058976A1
公开(公告)日:2012-03-08
The disclosure describes methods of synthesis of phosphonate ester derivatives. Preferred methods according to the disclosure allow for large-scale preparation of phosphonate ester compounds having high purity. In some embodiments, preferred methods according to the disclosure also allow for the preparation of phosphonate ester derivatives without the use of chromatographic purification methods and in better yield than previously used methods for preparing such compounds. Also disclosed are morphic forms of phosphonate ester derivatives.
Linear Semicrystalline Polyesters from Fatty Acids by Complete Feedstock Molecule Utilization
作者:Dorothee Quinzler、Stefan Mecking
DOI:10.1002/anie.201001510
日期:——
Complete and linear incorporation of fatty acids into polyesters is achieved by isomerizing carbonylation to give polymerization‐quality diesters and their polycondensation with the corresponding diols obtained by reduction. The strictly linear and long‐chain hydrocarbon nature of these polyesters results in a high degree of crystallinity and melting behavior akin to common thermoplastics.
[EN] PHOSPHORYLATED POLY(ESTER-UREA) BASED DEGRADABLE BONE ADHESIVES<br/>[FR] ADHÉSIFS OSSEUX DÉGRADABLES À BASE DE POLY(ESTER-URÉE) PHOSPHORYLÉS
申请人:BECKER MATTHEW
公开号:WO2017189534A1
公开(公告)日:2017-11-02
In various aspects, the present invention provides a degradable and resorbable novel phosphate functionalized amino acid-based poly(ester urea) adhesive and related methods for its synthesis and use. These adhesives are formed from phosphate functionalized PEU polymers and copolymers crosslinked using one or more divalent metal crosslinking agents. The phosphate functionalized amino acid-based poly(ester urea) adhesives of various embodiments of the present invention have been found particularly effective in bonding bone to either bone or metal and have demonstrated adhesive strengths on bone samples that were significant and comparable to commercially available poly(methyl methacrylate) bone cement.
Diamines for Polymer Materials via Direct Amination of Lipid- and Lignocellulose-based Alcohols with NH<sub>3</sub>
作者:Dennis Pingen、Judith B. Schwaderer、Justus Walter、Jiaqi Wen、George Murray、Dieter Vogt、Stefan Mecking
DOI:10.1002/cctc.201800365
日期:2018.7.19
catalytic directamination of long‐chain diols, derived from plant oils. High conversion was achieved with good selectivity, with the amount of nitrile impurities formed suppressed to a low level. From the lignocellulose‐based 5‐hydroxymethylfurfural (5‐HMF), or from bis(hydroxymethyl)furan, 2,5‐bis(aminomethyl)furan (BAMF) was generated. 5‐HMF was converted in a one‐pot, one‐step directamination and reductive