Calix[4]indoles: New Macrocyclic Tetra(indolylmethylene) Compounds with 2,7-Linkages
作者:David StC. Black、Donald C. Craig、Naresh Kumar
DOI:10.1016/0040-4039(95)01516-k
日期:1995.10
Some 7-hydroxymethyl-3-aryl-4,6-dimethoxyindoles 1 undergo acid catalysed cyclotetramerisation in addition to cyclotrimerisation to give the calix[4]indoles 3 as well as the calix[3]indoles 2: me tetramers 3, which display a 1,3-alternate cube-like structure, can also be obtained by the acid catalysed dimerisation of 7-hydroxymethyl-2,7'-dindolylmethanes 7.