91165-37-6Relevant academic research and scientific papers
Recognition of steric factor in external association of xanthenocrown-5 and bis-napthalenocrown-6 with bis(benzimidazolium)propane borontetrafluoride
Chaudhuri, Tandrima,Karmakar, Animesh,Kundu, Kshama,Ghosh, Sabari,Nayak, Sandip K.,Mukhopadhyay, Chhanda
, p. 141 - 145 (2016)
This is the first report of charge transfer band for crown-axel H-bonding interaction in acetonitrile medium. Monte Carlo simulation established external association of small cavity crown with BBIM-propane dication axels. Resonance energy, binding constant and ratiometric detection of association of xanthenocrown-5 (1) and bis-napthalenocrown-6 (2) with bis-(benzimidazolium)propane borontetrafluoride (3a-3d) in acetonitrile determined the effect of steric factor towards association.
PyC60-naphthacrown system: A new supramolecular recognition element
Pal, Debabrata,Kundu, Kshama,Nayak, Sandip K.,Bhattacharya, Sumanta
, p. 958 - 963 (2015/03/05)
(Graph Presented) Fulleropyrrolidine (PyC60) and a binaphthyl bridged crown ether macrocyclic receptor (1) undergoes spontaneous self-assembly phenomenon in solution to generate a new supramolecular recognition element having binding constant value of ～5.83 × 104 dm3 mol-1. Lifetime measurement reveals a static quenching mechanism behind the deactivation of photoexcited state of 1 in presence of PyC60. The results obtained from this work would definitely reinforce bridged cyclic crown ether as one of the most suitable fragments for the molecular recognition of various macrocyclic receptor(s) in near future.
Camphor-10-sulfonic acid catalyzed condensation of 2-naphthol with aromatic/aliphatic aldehydes to 14-aryl/alkyl-14H-dibenzo[a,j]xanthenes
Kundu, Kshama,Nayak, Sandip K.
, p. 1051 - 1058 (2015/02/05)
The (±)-camphor-10-sulfonic acid (CSA) catalyzed condensation of 2-naphthol with both aliphatic/aromatic aldehydes at 80 °C yielded 14-alkyl/ /aryldibenzoxanthenes as the sole products in high yields. However, the same condensation with benzaldehyde at 25
