Water-Accelerated Cationic π-(7-endo) Cyclisation: Application to Indole-Based Peri-Annulated Polyheterocycles
作者:Mohammad Saifuddin、Piyush K. Agarwal、Sudhir K. Sharma、Anil K. Mandadapu、Sahaj Gupta、Vimal K. Harit、Bijoy Kundu
DOI:10.1002/ejoc.201000596
日期:2010.9
An efficient and versatile method for the synthesis of indole-based polycyclic indolo-benzazepine and its derivatives through water-acceleratedcationic π-cyclisation is described. The strategy involves condensation of arylamine moieties linked to C-4 in indole/azaindole systems with arylaldehydes in water containing catalytic amount of Bronsted acids. The C-C bond formation in water is complete within