A novel one-pot three-(in situ five-)component condensation reaction: an unexpected approach for the synthesis of tetrahydro-2,4-dioxo-1H-benzo[b][1,5]diazepine-3-yl-2-methylpropanamide derivatives.
A novel and efficient method has been developed for the synthesis of tetrahydro-2,4-dioxo-1H-benzo[b][1,5]diazepine-3-yl-2-methylpropanamide derivatives using an aromatic diamine, Meldrum's acid, and an isocyanide in CH(2)Cl(2) at ambient temperature in high yields without using any catalyst or activation. The procedure provides an alternative method for the synthesis of benzo[b][1,5]diazepine derivatives. These compounds have closely related ring systems such as triflubazam, clobazam, and 1,5-benzodiazepines, which have a broad spectrum of biological activities.
Shaabani
Ahmad
A
Department of Chemistry, Shahid Beheshti University, P.O. Box 19396-4716, Tehran, Iran. a-shaabani@cc.sbu.ac.ir
Rezayan
Ali Hossein
AH
Keshipour
Sajjad
S
Sarvary
Afshin
A
Ng
Seik Weng
SW
D000627:Aminophenols / Q000737:chemistry; D001569:Benzodiazepines / Q000138:chemical synthesis* / Q000737:chemistry; D003486:Cyanides / Q000737:chemistry*; D003959:Diamines / Q000737:chemistry*; D004146:Dioxanes / Q000737:chemistry*
D000627:Aminophenols; D003486:Cyanides; D003959:Diamines; D004146:Dioxanes; D001569:Benzodiazepines; C027667:2-aminophenol; C076489:Meldrum's acid