A new diarylethene derivative containing an aminoquinoline unit was synthesized and its structure was determined by single crystal X-ray diffraction analysis. Its properties such as photochromism, fluorescent switches...A new diarylethene derivative containing an aminoquinoline unit was synthesized and its structure was determined by single crystal X-ray diffraction analysis. Its properties such as photochromism, fluorescent switches and detection for metal ions were measured. The results indicated that the closed-ring of the diarylethene was highly selective toward Cu^2＋ with an obvious absorption decrease and color changes from blue to colorless, even in the presence of other metal ions. The binding constant for the closed isomer of this new diarylethene and Cu^2＋ was 2.0× 10^4 L·mol^-1 and the limit of detection for Cu^2＋ was calculated to be lower than that in drink water. Finally, a logic circuit was constructed by using the absorption intensity as the output signal with the inputs of the combina- tional stimuli of light and Cu^2＋.展开更多
Atom-and step-economy in IBX assisted diversity-oriented synthesis is achieved with a versatile AQ auxiliary α-amino acid analogs offering rapid access to polycyclic spiro-quinolines featuring a quaternary stereocent...Atom-and step-economy in IBX assisted diversity-oriented synthesis is achieved with a versatile AQ auxiliary α-amino acid analogs offering rapid access to polycyclic spiro-quinolines featuring a quaternary stereocenter in 20%–91% yields under mild conditions via 7,8-dearomatization of quinolines. Free of a preinstalled activation group is highlight of this intramolecular oxidation spiroannulation tandem reaction. This type of N-heterospirocycles, traditionally difficult to access, may open the door to a potentially interest scaffold for synthetic and medicinal chemistry.展开更多
文摘A new diarylethene derivative containing an aminoquinoline unit was synthesized and its structure was determined by single crystal X-ray diffraction analysis. Its properties such as photochromism, fluorescent switches and detection for metal ions were measured. The results indicated that the closed-ring of the diarylethene was highly selective toward Cu^2＋ with an obvious absorption decrease and color changes from blue to colorless, even in the presence of other metal ions. The binding constant for the closed isomer of this new diarylethene and Cu^2＋ was 2.0× 10^4 L·mol^-1 and the limit of detection for Cu^2＋ was calculated to be lower than that in drink water. Finally, a logic circuit was constructed by using the absorption intensity as the output signal with the inputs of the combina- tional stimuli of light and Cu^2＋.
基金the National Natural Science Foundation of China (Nos. 22101074, 21877206, and 21772032)the 111 Project (No. D17007)+2 种基金Excellent Youth Foundation of Henan Scientific Committee (No. 222300420012)China Postdoctoral Science Foundation (No. 2019M660173)the Natural Science Foundation of Henan Province (No. 202300410233)。
文摘Atom-and step-economy in IBX assisted diversity-oriented synthesis is achieved with a versatile AQ auxiliary α-amino acid analogs offering rapid access to polycyclic spiro-quinolines featuring a quaternary stereocenter in 20%–91% yields under mild conditions via 7,8-dearomatization of quinolines. Free of a preinstalled activation group is highlight of this intramolecular oxidation spiroannulation tandem reaction. This type of N-heterospirocycles, traditionally difficult to access, may open the door to a potentially interest scaffold for synthetic and medicinal chemistry.
