Functionalized analogues of Tröger's base: scope and limitations of a general synthetic procedure and facile, predictable method for the separation of enantiomers
A major stumbling block in the applications of enantiomerically pure Tröger'sbase analogues is their poor availability. We have therefore developed a facile method for the enantioseparation of functionalized Tröger'sbase analogues possessing various substitution patterns. The systematic separation of a library comprising 36 representatives on the commercially available Whelk O1 chiral stationary
Reaction of Tröger’s base analogues with Vilsmeier reagents
作者:Qasim M. Malik、Andrew B. Mahon、Donald C. Craig、Andrew C. Try
DOI:10.1016/j.tet.2011.08.095
日期:2011.11
As part of a program aimed at introducing functionality onto the Tröger’s base framework post-synthesis, we investigated the formylation reaction of Tröger’s baseanalogues with Vilsmeier reagents. We found that rather than the anticipated reaction at the aryl rings, these compounds react with Vilsmeier reagents to afford compounds with a modified strap, whereby the apical methylene group is replaced
作者:Ze-Ling Wu、Xin Lv、Ling-Yi Meng、Xu-Lin Chen、Can-Zhong Lu
DOI:10.3390/molecules28124832
日期:——
blue shift in the emission from green to deep blue but also enhances the emission efficiency and the reverse intersystem crossing (RISC) process. As a result, TB-DMAC emits efficient deep-blue delay fluorescence with a photoluminescence quantum yield (PLQY) of 50.4% and a short lifetime of 2.28 μs in doped film. The doped and non-doped OLEDs based on TB-DMAC display efficient deep-blue electroluminescence
Efficient Synthesis of Imino-methano Tröger Bases by Nitrene Insertions into C–N Bonds
作者:Sandip A. Pujari、Laure Guénée、Jérôme Lacour
DOI:10.1021/ol4016892
日期:2013.8.2
A direct nitrene insertion into C-N bonds is observed upon treatment of methano-Troger bases with arylsulfonyl iminophenyliodinanes under copper and dirhodium catalysis. Novel cyclic imino-methano Troger bases are obtained (55-88%). Enantiopure products (ee >= 99%) can be obtained with tailored substrates.
Demethylenation of Tröger's Bases with Concomitant Hydrazine Formation
作者:Xuefeng Gao、Carissa S. Hampton、Michael Harmata
DOI:10.1002/ejoc.201201341
日期:2012.12
Trogers bases (TBs) react with dimethyldioxirane to produce the corresponding N-oxides in excellent yields. Upon treatment with acetic anhydride, these N-oxides undergo a Polonovski-type reaction that involves fragmentation and ultimate nitrogen–nitrogen bond formation to form hydrazines. Steric effects are evident in both the oxidation step and in the step involving the activation of the N-oxide, such