Towards high-performance polyurethanes: a mechanism of amine catalyzed aromatic imide formation from the reaction of isocyanates with anhydrides?
Polymer Chemistry Pub Date: 2023-03-22 DOI: 10.1039/D3PY00109A
Abstract
Poly(urethane imide)s (PUIs) with improved thermal properties and flame retardancy can be made in a direct way by the reaction of isocyanates with anhydrides to give aromatic imides. We investigated the mechanism of this reaction in the presence of water with experimental studies and quantum chemical calculations. The catalytic cycle is driven by the urea obtained from the hydrolysis of isocyanates. We show that with a secondary amine as a pre-catalyst and tertiary amine as a co-catalyst, the reaction proceeds fast without a need for additional solvent. The insights in the underlying mechanism provided by the computational study have guided the development of a solvent-free synthetic method that provides a pathway to produce PUIs on an industrial scale.
Recommended Literature
- [1] An approach to 7-aza-1-phosphanorbornane complexes: strain promoted rearrangement of 1-iminylphosphirane complexes and cycloaddition with olefins? Yang Xu,Min Wang,Donghui Wei,Rongqiang Tian,Zheng Duan,Fran?ois MatheyDalton Trans., 2019,48, 5523-5526 10.1039/C9DT00838A
- [2] An investigation on the interaction modes of a single-strand DNA aptamer and RBP4 protein: a molecular dynamic simulations approach? Raheleh Torabi,Hedayatollah Ghourchian,Massoud AmanlouOrg. Biomol. Chem., 2016,14, 8141-8153 10.1039/C6OB01094F
- [3] An anti-leakage liquid metal thermal interface material Kaiyuan Huang,Wangkang Qiu,Meilian Ou,Xiaorui Liu,Zenan Liao,Sheng ChuRSC Adv., 2020,10, 18824-18829 10.1039/D0RA02351E
- [4] An investigation of the electrochemical delithiation process of carbon coated α-Fe2O3nanoparticles Adrian Brandt,Florian Winter,Sebastian Klamor,Frank Berkemeier,Jatinkumar Rana,Rainer P?ttgen,Andrea BalducciJ. Mater. Chem. A, 2013,1, 11229-11236 10.1039/C3TA11821E
- [5] An all-solid-state imprinted polymer-based potentiometric sensor for determination of bisphenol S? Rongning Liang,Tanji Yin,Ruiqing Yao,Wei QinRSC Adv., 2016,6, 73308-73312 10.1039/C6RA14461F
- [6] An alumina stabilized graphene oxide wrapped SnO2 hollow sphere LIB anode with improved lithium storage? Xiang Liu,Qian Sun,A. B. Djuri?i?,Maohai Xie,Baohu Dai,Jinyao Tang,Charles Surya,Changzhong Liao,Kaimin ShihRSC Adv., 2015,5, 100783-100789 10.1039/C5RA22482A
- [7] An astrophysically-relevant mechanism for amino acid enantiomer enrichment Stephen P. Fletcher,Richard B. C. Jagt,Ben L. FeringaChem. Commun., 2007, 2578-2580 10.1039/B702882B
- [8] Acentric and chiral heterometallic inorganic–organic hybrid frameworks mediated by alkali or alkaline earth ions: synthesis and NLO properties Huabin Zhang,Shaowu DuCrystEngComm, 2014,16, 4059-4068 10.1039/C3CE42419G
- [9] An algal process treatment combined with the Fenton reaction for high concentrations of amoxicillin and cefradine Haitao Li,Yu Pan,Zhizhi Wang,Shan Chen,Ruixin Guo,Jianqiu ChenRSC Adv., 2015,5, 100775-100782 10.1039/C5RA21508K
- [10] An Assessment of the Laminar Hypersonic Double-Cone Experiments in the LENS-XX Tunnel JaideepRay,PatrickBlonigan,EricT.Phipps,KathrynMaupin 10.2514/1.j062802
Journal Name：Polymer Chemistry
research_products
-
CAS no.: 89640-58-4
![N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide](https://ossimg.kuujia.com/scimg/1444500/1444113-98-7x500.png)
![1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol](https://ossimg.kuujia.com/scimg/1271000/1270529-38-8x500.png)
![2,2-Difluoro-3-[methyl(2-methylbutyl)amino]propanoic acid](https://ossimg.kuujia.com/scimg/2138500/2138166-62-6x500.png)
![2-(1H-indol-3-yl)-N-{[6-(thiophen-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]methyl}acetamide](https://ossimg.kuujia.com/scimg/2034500/2034271-14-0x500.png)