A Non‐Hydrolysis Reaction‐Based Imine for Fluorescence Response toward Al
<sup>3+</sup>
Ions with Extremely High Selectivity
作者:Xu Jiang、Rui‐Xue Ji、Jiang‐Shan Shen
DOI:10.1002/cplu.202300037
日期:2023.3
was introduced to synthesize a probe bearing two imine bonds linked by two salicylaldehyde (SAs). The hydrophobicity of binaphthyl moiety and the unique clamp-like structure formed from double imine bonds and ortho-OH on SA part make it possible for the probe to function as an ideal receptor to coordinate with Al3+ ions, leading to fluorescence originating from the complex rather than from the assumed
Synthesis, Structure, and Reactivity of Binaphthyl Supported Dihydro[1,6]diazecines
作者:Lemmerer、Abraham、Brutiu、Roller、Widhalm
DOI:10.3390/molecules24173098
日期:——
A short approach to chiral diaza-olefines from protected 2,2′-diamino-1,1′-binaphthyl is presented. Cis- and trans-olefines can be selectively obtained by twofold N-allylation followed by RCM or by bridging a 2,2′-diamino-1,1′-binaphthyl precursor with trans-1,4-dibromo-2-butene. Deprotection afforded cis- and trans-dihydro[1,6]diazecines 1 in 58 and 64% overall yield. The reactivity of the but-2-ene-1
提出了一种从受保护的 2,2'-二氨基-1,1'-联萘制备手性二氮杂烯烃的简单方法。顺式和反式烯烃可以通过双重N-烯丙基化然后进行RCM或通过将2,2'-二氨基-1,1'-联萘前体与反式-1,4-二溴-2-丁烯桥联来选择性地获得。脱保护得到顺式和反式二氢[1,6]二氮嗪1,总产率为58%和64%。研究了丁-2-烯-1,4-二基片段的反应性,产生相应的环氧化物、二醇以及单溴和二溴产物。在一些情况下,观察到邻近 N-Boc 组的重新排列和参与。在任何情况下都无法完成烯丙基取代。可以对 13 种化合物进行 X 射线结构分析。