102088-40-4Relevant academic research and scientific papers
A NEW SYNTHESIS OF p-NITROCALIXARENE
Shinkai, Seiji,Tsubaki, Takayuki,Sone, Takaaki,Manabe, Osamu
, p. 3343 - 3344 (1985)
p-Nitrocalixarene which possibly serves as a potential intermediate to derive functionalized calixarenes was synthesized for the first time.
New synthetic method of p-nitrocalixarenes
Zhang, Wen-Chun,Zheng, Yan-Song,Huang, Zhi-Tang
, p. 3763 - 3767 (1997)
Calixarenes 1 were directly nitrated with potassium nitrate and aluminum chloride to give p-nitrocalixarenes 2 in good yields. Formation of p-nitrocalix[4]arene (2a) from reaction of p-bromomethylcalix[4]arene (3) with silver nitrate is also described.
New Syntheses of Calixarene-p-sulphonates and p-Nitrocalixarenes
Shinkai, Seiji,Araki, Koji,Tsubaki, Takayuki,Arimura, Takashi,Manabe, Osamu
, p. 2297 - 2300 (2007/10/02)
Calixarene-p-sulphonates (tetramer, hexamer, and octamer) have been prepared (75-88percent) and used to give p-nitrocalixarenes (15-22percent yields based on the starting calixarenes).The novel nitration has two advatages: (i) calixarenes are protected from nitric acid oxidation by the electron-withdrawing sulphonate groups and (ii) the difference in the water-solubility of the p-nitrocalixarenes from the sulphonate-containing, lower nitration products, allows ready isolation of the former.The p-nitrocalixarenes thus obtained have potential as intermediates in the synthesis of a variety of functionalised calixarenes.
