A novel, shape-selective, zeolite-catalyzed synthesis of calix(4)pyrrolesElectronic supplementary information (ESI) available: selected analytical and spectral data for compounds 1–10. Table S1: results of Monte Carlo simulations. Fig. S1: cross-sectional view of the supercell of Al-MCM-41 in which the relative orientations of 1a and other molecules are seen. See http://www.rsc.org/suppdata/cc/b1/b105690p/IICT Communication No. 4641.

Abstract

Porosity and acidity of molecular sieve Al-MCM-41 (ca. 30 Å pore diameter) plays a crucial role in the synthesis of novel calix(4)pyrroles; for the first time, Al-MCM-41 has been used as a solid acid catalyst to produce a number of calix(4)pyrroles with good selectivity and yields where zeolite HY (ca. 7.6 Å pore diameter) yields mainly the linear chain dimer and no cyclic products.