The synthesis of argentivorous molecules (L1 and L2) having two chromophores (4-(anthracen-9-yl)benzyl or 4-(pyren-1-yl)benzyl groups) and two benzyl groups and the fluorescence properties of their silver complexes in a solution and the solid state are reported. A crystallographic approach for the Ag+ complexes with L1 and L2 revealed that the observed fluorescence changes stem from the excimer formation
具有两个发色团(4-(蒽-9-基)苄基或4-(芘-1-基)苄基)和两个苄基的食阿根廷分子(L 1和L 2)的合成及其银的荧光特性报告了溶液中的配合物和固态。Ag +与L 1和L 2配合物的晶体学方法表明,观察到的荧光变化源于荧光的准分子形成和消光。此外,L 1和L 2对 Ag +离子的结合稳定性通过 Ag +-诱导的紫外-可见光和 PL 光谱变化。
Method of preparing cis-8b-methyldecahydro-2a,4a,6a,8a-tetraazacyclopenta[fg] acenaphthylene, cis-decahydro-2a,4a,6a,8a-tetraazacyclopenta[fg] acenaphthylene, cyclene and functionalised cyclenes
申请人:Boschetti Frèderic
公开号:US20060217548A1
公开(公告)日:2006-09-28
A method of preparing cyclene having formula (I) from triethylenetetraamine having formula (VIII) or ethylenediamine having formula (VIII′) includes a series of steps. The first series of steps (I) includes a step A (one-pot preparation of the compound having formula (IIa) from the compound having formula (VIII)), followed by a step B (transforming the compound having formula (IIa) into cyclene having formula (I)). The second series of steps (II) includes a step C (preparing the compound having formula (IIb) from the compound having formula (VIII)), followed by a step D (transforming the compound having formula (IIb) into cylcene having formula (I)). The third series of steps (III) includes a step E involving the one-pot preparation of the compound having formula (IIa) from the compound having formula (VIII), followed by a step B involving the transformation of the compound having formula (IIa) into cyclene having formula (I).
Macrobicycles based on cyclen and cyclam containing 1,3-disubstituted adamantane moiety
作者:Sergei M. Kobelev、Alexei D. Averin、Alexei K. Buryak、Evgenii N. Savelyev、Boris S. Orlinson、Gennadii M. Butov、Ivan A. Novakov、Franck Denat、Roger Guilard、Irina P. Beletskaya
DOI:10.3998/ark.5550190.0013.713
日期:——
Bis(bromobenzyl)derivatives of cyclen and cyclam obtained according to previously described procedures were introduced in a palladium-catalyzed reaction with 1,3bis(aminomethyl)adamantane and 1,3-bis(2-aminoethyl)adamantane to produce macrobicycles in moderate yields. The formation of tricyclic cyclodimers was observed in many cases. Tetrabenzyl derivatives of cyclen and cyclam were synthesized from the
Seven double-armed cyclens bearing twoaromatic side-arms, at the 1- and 7-positions of the cyclens, were prepared via three steps from dimethyl 2,2′-iminodiacetate. The X-ray structures of the Ag+ complexes and Ag+-ion-induced 1H NMR spectral changes suggest that the twoaromatic side-arms cover the Ag+ ions incorporated in the ligand cavities, as if the aromatic ring “petals” catch the Ag+ ions in
经由三个步骤,由2,2'-亚氨基二乙酸二甲酯经三个步骤制备了七个带有两个芳香族侧臂的双臂周期环,它们位于周期环的1和7位。Ag +络合物的X射线结构和Ag + -离子诱导的1 H NMR光谱变化表明,两个芳族侧臂覆盖了结合在配体腔中的Ag +离子,好像芳环“花瓣”抓住了一样用真正的食虫植物(维纳斯捕蝇器)用两片叶子捕获昆虫的方式中的Ag +离子。还据报道,芳族侧臂之间的CH-π相互作用以及Ag + -π相互作用对于双臂和四臂旋光子充当精子分子至关重要。
An easy route towards regioselectively difunctionalized cyclens and new cryptands
Reductive amination of various aldehydes with cyclen represents a very convenient method for the synthesis of a wide range of 1,7-difunctionalized cyclens, as well as new cryptands.