81590-83-2

Upstream product

• 17422-74-1 3-Formylchromone 
• 95-54-5 1,2-diamino-benzene 
• 113326-76-4 N-methylnitrone 
• 113326-75-3 C-(4-oxo-4H<1>benzopyran-3-yl)-N-phenylnitrone 
• 151112-74-2 C₁₇H₁₃NO₃ 

Downstream Products

• 1290610-55-7 7,16-bis[2-(octoxy)benzoyl]-5,14-dihydrodibenzo[b,i][1,4,8,11]tetraazacyclotetradecine 
• 1443006-60-7 (7-{2-[6-(a den-9-yl)hexoxy]benzoyl}-16-{2-[6-(N-pyridinium-1-yl)hexoxy]benzoyl}-5,14-dihydrodibenzo[b,i][1,4,8,11]tetraazacyclotetradecine bromide) 
• 1443006-61-8 (7-(2-hexoxybenzoyl)-16-{2-[3-(N-pyridinium-1-yl)propoxy]-benzoyl}-5,14-dihydrodibenzo[b,i][1,4,8,11]tetraazacyclotetradecinebromide) 

Relevant academic research and scientific papers

DBSA mediated chemoselective synthesis of 2-substituted benzimidazoles in aqueous media

An efficient synthetic method has been developed for the facile synthesis of 2-substituted benzimidazoles in organized aqueous media in the presence of a surfactant (viz. DBSA) as catalyst and I2 as co-catalyst. The method described has the advantages of operational simplicity, excellent yields, high chemoselectivity, and clean and green reaction profile.

Reaction of amines with nitrones derived from chromone-3-carbaldehyde

Nitronc 2 derived from 3-formylchromone 1 produces 3-aminomethylene-2- iminochroman-4-one 8 on reaction with primary amine 7, chromenoquinoline 14 with piperidine and dihydrotelraaza[14]annulene 15 with o-phenylenediamine.