855525-78-9Relevant articles and documents
A TCF-based colorimetric and fluorescent probe for highly selective detection of oxalyl chloride
Jin, Longyi,Sun, Yuan,Tang, Lijun,Zhong, Keli
, (2020)
We herein reported a new fluorescent probe TCF-EA for detection of oxalyl chloride in dichloromethane. Probe TCF-EA exhibits high selectivity and sensitivity to oxalyl chloride with a low detection limit (2.9 nM) and fast response (5min). The probe displays dual channel responses to oxalyl chloride, the color is changed from pink to light yellow, and the fluorescence is quenched at 614 nm. The detection mechanism was proved to undergo amidation and esterification tandem reactions between TCF-EA and oxalyl chloride. Moreover, the probe can be applied to prepare test strips to detect oxalyl chloride in the gas phase.
Amino acid promoted CuI-catalyzed C-N bond formation between aryl halides and amines or N-containing heterocycles
Zhang, Hui,Cai, Qian,Ma, Dawei
, p. 5164 - 5173 (2007/10/03)
CuI-catalyzed coupling reaction of electron-deficient aryl iodides with aliphatic primary amines occurs at 40 °C under the promotion of N-methylglycine. Using L-proline as the promoter, coupling reaction of aryl iodides or aryl bromides with aliphatic primary amines, aliphatic cyclic secondary amines, or electron-rich primary arylamines proceeds at 60-90 °C; an intramolecular coupling reaction between aryl chloride and primary amine moieties gives indoline at 70 °C; coupling reaction of aryl iodides with indole, pyrrole, carbazole, imidazole, or pyrazole can be carried out at 75-90 °C; and coupling reaction of electron-deficient aryl bromides with imidazole or pyrazole occurs at 60-90 °C to provide the corresponding N-aryl products in good to excellent yields. In addition, N,N-dimethylglycine promotes the coupling reaction of electron-rich aryl bromides with imidazole or pyrazole to afford the corresponding N-aryl imidazoles or pyrazoles at 110 °C. The possible action of amino acids in these coupling reactions is discussed.
