A process for preparing monoesters comprises the step of reacting at least one diol with at least one carboxylic acid in a biphasic solvent system, the carboxylic acid being sufficiently water soluble to allow esterification to occur, and the biphasic solvent system comprising water and at least one aprotic solvent in which the resulting monoester has greater solubility than in water.
1,1,n,n-Tetramethyl[n](2,11)teropyrenophanes (n = 7–9): a series of armchair SWCNT segments
作者:Bradley L. Merner、Kiran Sagar Unikela、Louise N. Dawe、David W. Thompson、Graham J. Bodwell
DOI:10.1039/c3cc43268h
日期:——
A new iterative bridge formation strategy has been employed in the synthesis of a series of [n](2,11)teropyrenophanes (n = 7â9). The generation of the nonplanar teropyrene system, which is calculated to be bent through 178.7° for the smallest homologue (n = 7), is accomplished using a VID reaction of a cyclophanemonoene precursor for the first time.
在合成一系列[n](2,11)teropyrenophanes (n = 7â9) 的过程中,我们采用了一种新的迭代桥形成策略。根据计算,最小同系物(n = 7)的非平面芘系统弯曲度为 178.7°,该非平面芘系统的生成首次使用了环番木烯烃前体的 VID 反应。
The Development of Synthetic Routes to 1,1,<i>n</i>,<i>n</i>-Tetramethyl[<i>n</i>](2,11)teropyrenophanes
作者:Kiran Sagar Unikela、Bradley L. Merner、Parisa Ghods Ghasemabadi、C. Chad Warford、Christopher S. Qiu、Louise N. Dawe、Yuming Zhao、Graham J. Bodwell
DOI:10.1002/ejoc.201900707
日期:2019.7.31
BIG BEND chimes in – this is not second hand news! Every minute detail of the synthesis of a striking series of 1,1,n,n‐tetramethyl[n](2,11)teropyrenophanes (n=7–9) is described. The end‐to‐end bend in the teropyrene system clocks in at as much as 177.9°.
大弯曲声响起–这不是二手新闻!详细介绍了惊人的1,1, n, n-四甲基[ n ](2,11)萜烯基庚烯( n = 7–9)系列的合成。萜品system体系的端对端弯曲时脉可达177.9°。
Acyclic monomers which when cured are reworkable through thermal decomposition
申请人:Cornell Research Foundation, Inc.
公开号:US06355702B1
公开(公告)日:2002-03-12
Compounds containing unsaturated aliphatic moieties which are linked to each other by a tertiary oxycarbonyl containing acyclic moiety are basis for compositions which are cured to polymer networks which are thermally decomposable to provide residue which can be dissolved to allow repair of inoperative assemblies by replacement of inoperative components or recovery or recycling of operative elements which are affixed in assemblies by the cured compositions.