A novel synthesis of indolyl and benzo[b]thienyl imines and Diels-Alder reactions promoted by indium trichloride
作者:Govindarajulu Babu、Paramasivan T. Perumal
DOI:10.1016/s0040-4020(99)00151-9
日期:1999.4
Anhydrous indium trichloride is found to catalyze the reaction of Schiff'sbasesderivedfromsubstitutedanilines with 3-chloro-1H-indole-2-carboxaldehyde and 3-chlorobenzo[b]thiophene-2-carboxaldehyde which resulted in new route to indolyl and benzo[b]thienyl imines. These imines reacted with cyclopentadiene and 3,4-dihydro-2H-pyran to afford new quinoline derivatives in good yields.
发现无水三氯化铟催化衍生自取代苯胺的席夫氏碱与3-氯-1 H-吲哚-2-甲醛和3-氯苯并[ b ]噻吩-2-甲醛的反应,这导致了向吲哚基和苯并苯的新途径[ b ]噻吩亚胺。这些亚胺与环戊二烯和3,4-二氢-2 H-吡喃反应,以高收率提供新的喹啉衍生物。