title: A novel, shape-selective, zeolite-catalyzed synthesis of calix(4)pyrroles.
abstract: Porosity and acidity of molecular sieve Al-MCM-41 (ca. 30 A 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 ad yields where zeolite HY (ca. 7.6 A pore diameter) yields mainly the linear chain dimer and no cyclic products.
authors.affiliation: Indian Institute of Chemical Technology, Hyderabad-500 007, India.
authors.forename: M R
authors.initials: MR
authors.lastname: Kishan
authors.forename: N
authors.initials: N
authors.lastname: Srinivas
authors.forename: K V
authors.initials: KV
authors.lastname: Raghavan
authors.forename: S J
authors.initials: SJ
authors.lastname: Kulkarni
authors.forename: J A
authors.initials: JA
authors.lastname: Sarma
authors.forename: M
authors.initials: M
authors.lastname: Vairamani