4272-77-9Relevant articles and documents
Photolysis of the sulfonamide bond of metal complexes of N-dansyl-1,4,7,10-tetraazacyclododecane in aqueous solution: A mechanistic study and application to the photorepair of cis,syn-cyclobutane thymine photodimer
Aoki, Shin,Tomiyama, Yumiko,Kageyama, Yoshiyuki,Yamada, Yasuyuki,Shiro, Motoo,Kimura, Eiichi
, p. 561 - 573 (2009)
Sulfonamide constitutes a ubiquitous functional group that is frequently used in organic chemistry, analytical chemistry, and medicinal chemistry. We report herein on the photolysis of a dansylamide moiety of 1-dansyl-1,4,7,10- tetraazzacyclododecane (Nda
Dual signaling of thallium(III) ions via oxidative cleavage of a sulfonhydrazide linkage
Ahn, Sangdoo,Chang, Suk-Kyu,Choi, Myung Gil,Lee, Yu Jeong,Park, Tae Jung,Yoo, Jae Hoon
, (2020/03/17)
The thallium is widely used in various research and industrial applications but is very toxic. In this work, we developed a novel reaction-based dual signaling probe for the selective and sensitive determination of Tl3+ via the oxidative cleavage of a rhodamine–dansylhydrazide conjugate. The designed probe showed pronounced colorimetric and fluorescence signaling behavior toward Tl3+ with a detection limit of 1.3 × 10–7 M (0.027 ppm), as well as selectivity over other common metal ions, anions, and oxidants. The Tl3+ signaling process required less than 2 min and was not influenced by the solution pH within the range of 4.0–5.5; however, the signal diminished significantly above pH 6.0. To demonstrate the practical applicability of the designed probe, a simple and convenient colorimetric assay for the determination of Tl3+ in commercial reagents was established using an office scanner as a readily available signal capturing device.
Preparation method of 6-deuterated dansyl chloride
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Paragraph 0076-0078, (2020/12/14)
The invention belongs to the technical field of isotope derivatization reagent preparation, and particularly relates to a preparation method of 6-deuterated dansyl chloride. According to the preparation method, 6-deuterated dansyl chloride can be prepared from reaction raw materials including 5-amino-1-naphthalene sulfonic acid, sodium hydride, deuterated methyl iodide, phosphorus oxychloride andphosphorus pentachloride. The preparation method has the advantages of easily available raw materials, low toxicity, few intermediate products and high yield.
A trifluoroacetic acid-labile sulfonate protecting group and its use in the synthesis of a near-IR fluorophore
Pauff, Steven M.,Miller, Stephen C.
supporting information, p. 711 - 716 (2013/02/25)
Sulfonated molecules exhibit high water solubility, a property that is valuable for many biological applications but often complicates their synthesis and purification. Here we report a sulfonate protecting group that is resistant to nucleophilic attack but readily removed with trifluoroacetic acid (TFA). The use of this protecting group improved the synthesis of a sulfonated near-IR fluorophore and the mild deprotection conditions allowed isolation of the product without requiring chromatography.
