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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/1344

Title: Preparation of p-nitrocalix[n]arene methyl ethers via ipso-nitration and crystal structure of tetramethoxytetra-p-nitrocalix[4]arene
Authors: Satish Kumar
Varadarajan, R
Chawla, H M
Hundal, Geeta
Hundal, M S
Keywords: Calixarene derivative
Crystal structure
Issue Date: 2004
Citation: Tetrahedron, 60(4), 1001-1005
Abstract: Nitration of p-tert-butylcalix[n]arene methyl ethers under a variety of reaction conditions has been examined. It has been determined that amongst different nitration procedures adopted (AlCl3/KNO3, HNO3/CH3COOH, HNO3/(CH3CO)2O, cerium(IV) ammonium nitrate/CH3COOH), ipso-nitration with CH3COOH/HNO3 gives best yields of p-nitrocalixarenes and work up conditions. ipso-Nitration of tetramethoxytetra-p-tert-butylcalix[4]arene gives tetramethoxytetra-p-nitrocalix[4]arene as triclinic crystals with space group with a=9.102(3) Å, b=11.623(3) Å, c=18.368(3) Å and α=77.99(2)°, β=81.10(2)°, γ=73.37(2)°. Its conformation is partial cone and it forms an exocylic 1:1 complex with DMF.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/1344
Appears in Collections:Chemistry

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