Synthesis of new bis(tetrahydropyrrolo[3,4-b]carbazoles) with a functionalized diaryl spacer
作者:Farokh Mehrabani、Ulf Pindur
DOI:10.1039/b006899n
日期:——
Some new bis(tetrahydropyrrolo[3,4-b]carbazoles) were synthesized by Diels–Alder reactions of in-situ generated indole-2,3-quinodimethanes with a variety of bismaleimides as dienophiles and also by reaction of dianilines with a succinic acid anhydride group incorporated into a biscarbazole. In a special reaction a spermine linker was introduced. The new biscarbazoles represent potential DNA ligands
一些新的双(四氢吡咯并[3,4- b ]咔唑)是通过原位生成的吲哚-2,3-喹二甲烷与各种双马来酰亚胺作为亲二烯物的狄尔斯-阿尔德反应,以及二苯胺与琥珀酸的反应合成的。并入双咔唑的酸酐基团。在一个特殊的反应中,引入了精胺接头。新的双咔唑代表了开发新的抗肿瘤活性药物的潜在DNA配体。
Diacetylene-Based C
2h-Symmetric Monomers for Two-Dimensional-Polymer Synthesis
作者:Ming Li、Mengyao Song、Hanbing Ma、Minghan Ren、Zhaoquan Ai
DOI:10.1055/s-0036-1588664
日期:——
Two linear monomers with two terminal photoreactive groups (anthracene or maleimide) embedded in a diacetylene skeleton were synthesized for two-dimensional-polymer synthesis. Both of them were crystallized and their single-crystal structures were solved. It was found that the size of terminal groups can be critical for diacetylene’s arrangement. The crystal structure of dimaleimide monomer revealed
Convenient One-Step Synthesis of Benzotriazolylsuccinimides in Melt
作者:Ivan A. Farion、Dmitrii M. Mognonov、Vitaliy F. Burdukovskii、Bato Ch. Kholkhoev、Petr S. Timashev
DOI:10.1002/jhet.2557
日期:2017.3
maleimides in melt at elevated temperatures has resulted in benzotriazolylsuccinimides. According to spectroscopy data, benzotriazolylsuccinimides obtained contain both major (benzotriazol‐1‐yl)‐succinimide residue and minor (benzotriazol‐2‐yl)‐succinimide residue. An effect of substituents in the initial reagents on the fine splitting of carbon peaks in 13C NMR spectrums of benzotriazolylsuccinimides is discussed
1H-苯并三唑与马来酰亚胺在高温熔体中的一步相互作用产生了苯并三唑基琥珀酰亚胺。根据光谱数据,所获得的苯并三唑基琥珀酰亚胺包含主要(苯并三唑-1-基)-琥珀酰亚胺残基和次要(苯并三唑-2-基)-琥珀酰亚胺残基。讨论了初始试剂中取代基对苯并三唑基琥珀酰亚胺的13 C NMR光谱中碳峰精细分裂的影响。还讨论了苯并三唑基琥珀酰亚胺的结构对其结晶度的影响。
[EN] [(2-ETHOXY-5-TRANS-1-PROPEN-1-YL)-PHENOXYL]-TERMINATED COMPOUNDS<br/>[FR] COMPOSÉS À TERMINAISON [(2-ÉTHOXY-5-TRANS-1-PROPÉN-1-YL)-PHÉNOXYLE]
申请人:EVONIK TECHNOCHEMIE GMBH
公开号:WO2017045931A1
公开(公告)日:2017-03-23
The present invention relates to compounds according to formula (I) and to heat-curable resin compositions based on polymaleimide resin systems comprising such compounds as co-monomers:, (I) wherein Dis an x-functional group; and x is an integer ≥ 2; with the proviso that the x-functional group D is not a polycarbonate with an average molar mass in the range of 15000 g/mol to 150000 g/mol. The present invention also relates to crosslinked resins obtainable by curing such compositions. Compounds of the present invention can be used amongst others in fields like structural adhesives, matrix resins for fiber prepregs, moulding compounds, as well as structural and/or electrical composites.
[EN] THERMOSETTING RESIN COMPOSITIONS<br/>[FR] COMPOSITIONS DE RÉSINE THERMODURCISSABLE
申请人:HEXCEL COMPOSITES LTD
公开号:WO2017108946A1
公开(公告)日:2017-06-29
Meta and para alkenyl phenols are reacted with hydroxyl benzophenone to produce compounds of the genera formula or which are used as curatives for polymaleimide resins.