Meta-terphenyls as building blocks for benzimidazolophanes
摘要:
Coupling of the dibromide 4 and the tetrabromide 6 with benzimidazole gave the benzimidazolophanes 1 and 2 respectively. (C) 1997 Elsevier Science Ltd.
Pyridinophanes as Two-Centre Phase-Transfer Catalyst for N-Alkylation Reaction
作者:Perumal Rajakumar、Manickam Dhanasekaran
DOI:10.1055/s-2006-926304
日期:——
The syntheticutility of water-soluble pyridinophanes 1 and 2 as an efficient two-centre phase-transfercatalyst for N-alkylation of indoles, imidazole, benzimidazole and benzotriazole has been explored. Application of such pyridinophanes for the synthesis of various precyclophanes involving bis-N alkylation is also described.
Sodium sulfate supported synthesis of cationic cyclophanes using microwaves
作者:Perumal Rajakumar、Venghatraghavan Murali
DOI:10.1039/b109003h
日期:2001.12.19
A facile microwave-assisted synthesis of a series of cationic cyclophanes, viz. benzimidazolophanes 3a–3f, benzotriazolophanes 3g–3j, through efficient double quaternization of the corresponding precyclophanes 1a–1j with appropriate dibromides 2a–2d in solid phase medium, is described.