C3-Symmetric Proline-Functionalized Organocatalysts: Enantioselective Michael Addition Reactions
作者:Jarugu Narasimha Moorthy、Satyajit Saha
DOI:10.1002/ejoc.201000569
日期:2010.11
C 3 -Symmetric, tripodal catalyst 4 based on 1,3,5-triethylbenzene, which incorporates the features of a molecular receptor, is shown to catalyze Michaeladditionreactions of carbonyl compounds to β-nitrostyrenes in a high stereoselectivity (up to 99:1 dr and up to 98 % ee).
基于 1,3,5-三乙苯的 C 3 -对称三足催化剂 4 结合了分子受体的特征,显示出以高立体选择性(高达 99: 1 dr 和高达 98 % ee)。
A bright entry to improve the performance of DSSCs with the influence of novel optoelectronic acridinedione based macromolecules in I−/I3− electrolytes
The performance of Ru(II) dye-sensitized nanocrystalline TiO2 solar cells (DSSCs) is described with newly synthesized multivalent macromolecules, containing excellent optoelectronic acridinedione linked with 1,2,3-triazole units, via a novel and convenient Cu(I)-catalyzed alkyne and azide 1,3-dipolar cycloaddition (CuAAC) reaction. These unique macromolecules have proved to be highly suitable for utilizing additives in Iâ/I3â redox couple electrolytes. Among the various substitutions, the maximum photo-current conversion efficiency of about 6.4% with a Voc of 810 mV was obtained with electron rich substitutions in the nitrogen heteroatom.
A Cascade Aza-Cope/Aza-Prins Cyclization Leading to Piperidine Derivatives
作者:Jothi L. Nallasivam、Rodney A. Fernandes
DOI:10.1002/ejoc.201403607
日期:2015.3
The cascadeaza-Cope/aza-Prinscyclization of homoallylamines to give substituted piperidines has been explored. The use of glyoxalic acid as the carbonyl component afforded bicyclic structures as a result of the internal carboxylate anion trapping the intermediate cation. The unimolecular bis-, tris-, and tetrakis(homoallylamine)s efficiently delivered the appended bis-, tris- and tetrakis(piperidine-4-ol)s
with tetracycline and fluconazole as standards for anti-microbial and anti-fungal activity. Triazolylcoumarins exhibit anti-microbial activity against all the tested pathogens, which is further supported by molecular docking studies. A series of triazolylcoumarins was synthesized using click chemistry approach. All the triazolylcoumarin compounds were evaluated for their anti-microbial activity against
A Chemosensor Built with Rhodamine Derivatives Appended to an Aromatic Platform via 1,2,3-Triazoles: Dual Detection of Aluminum(III) and Fluoride/Acetate Ions
作者:Shubhra B. Maity、Parimal K. Bharadwaj
DOI:10.1021/ic301915s
日期:2013.2.4
A triazole-ring-appended rhodamine dye (L) has been synthesized that serves as a chromogenic and fluorogenic sensor for dual sensing of aluminum(III) and fluoride or acetate ions specifically.