title: A novel electrophilic reagent, 4-(N-chloroformylmethyl-N-methyl)amino- 7-N,N-dimethylaminosulphonyl-2,1,3-benzoxadiazole (DBD-COCl) for fluorometric detection of alcohols, phenols, amines and thiols.
abstract: A novel electrophilic reagent for alcohols, phenols, amines and thiols, 4-(N-chloroformylmethyl-N-methyl)amino-7-N,N-dimethylaminosulph onyl-2,1,3- benzoxadiazole (DBD-COCl) was synthesized. The reactivity of the reagent to these nucleophiles was studied using high-performance liquid chromatography (HPLC) with precolumn derivatization techniques. DBD-COCl reacted in benzene solution at the room temperature or 60 degrees C with androsterone (a representative of hydroxyls), (-)-mandelic and D,L-lactic acid (hydroxy acid), estrone (phenol), benzylamine (primary amine), phenetidine (aromatic amine) and alpha-mercapto-N,2-naphthylacetamide (thiol) to give fluorescent products bearing fluorescence wavelengths at between 543 nm and 555 nm (excitation at between 437 nm and 445 nm). The base catalyst, quinuclidine was required to complete the reaction with the nucleophiles except aromatic amines. The reaction solution was subjected to a reversed phase HPLC and the detection limits of the derivatives were at the femto mol range on column.
authors.affiliation: Faculty of Pharmaceutical Sciences, University of Tokyo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Imai
authors.forename: T
authors.initials: T
authors.lastname: Fukushima
authors.forename: H
authors.initials: H
authors.lastname: Yokosu
mesh_terms: D000438:Alcohols / Q000032:analysis*; D000588:Amines / Q000032:analysis*; D000738:Androsterone / Q000737:chemistry; D001554:Benzene; D001596:Benzylamines / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D004970:Estrone / Q000737:chemistry; D005456:Fluorescent Dyes; D007202:Indicators and Reagents; D007700:Kinetics; D007773:Lactates / Q000737:chemistry; D019344:Lactic Acid; D008333:Mandelic Acids / Q000737:chemistry; D010069:Oxadiazoles / Q000138:chemical synthesis* / Q000737:chemistry; D010628:Phenetidine / Q000737:chemistry; D010636:Phenols / Q000032:analysis*; D012996:Solutions; D013050:Spectrometry, Fluorescence; D013438:Sulfhydryl Compounds / Q000032:analysis* / Q000737:chemistry
chemical_list: D000438:Alcohols; D000588:Amines; D001596:Benzylamines; D005456:Fluorescent Dyes; D007202:Indicators and Reagents; D007773:Lactates; D008333:Mandelic Acids; D010069:Oxadiazoles; D010636:Phenols; D012996:Solutions; D013438:Sulfhydryl Compounds; D010628:Phenetidine; C089192:4-(N-chloroformylmethyl-N-methyl)amino-7-N,N-dimethylaminosulfonyl-2,1,3-benzoxadiazole; D004970:Estrone; D019344:Lactic Acid; C030796:benzylamine; D000738:Androsterone; D001554:Benzene; C037938:mandelic acid