Investigation of Keto-enol Tautomers during the Synthesis of Aryl-bis (2-hydroxy-1-naphthyl)Methanes

Dutta, Parama; Saikia, Lakshi; Das, Rashmi Jyoti; Borah, Ruli

doi:10.1007/s12039-014-0741-6

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…The band at 1465 cm −1 which can be attributed to the 19a vibration of the NO2 group (according to the Wilson notation 36 ) is decreasing while a band is appearing at 1446 cm −1 (attributed to the 19b vibration of the NO group 32 ) and at 1372 cm −1 (which could be attributed to an enol form signature). 38 A weak absorption can be detected at 3175 cm −1 which could also indicate an enol O-H bond vibration.…”

Section: Photophysical and Photochemical Characterizationmentioning

confidence: 99%

o-Nitrobenzyl photoremovable groups with fluorescence uncaging reporting properties

2018

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o-Nitrobenzyl (o-NB) derivatives are the most widely applied photoremovable groups for the study of dynamic biological processes. By introducing different substituents to the benzylic position we were able to generate a fluorescence signal upon irradiation. This signal originates from the formation of a nitrosoketone by-product able to achieve a keto-enol tautomerism leading to pi-conjugated α-hydroxystilbene derivatives. These o-NB caging groups can be used to directly monitor the uncaging event by the release of a detectable fluorescent side-product.

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Section: Photophysical and Photochemical Characterizationmentioning

confidence: 99%

o-Nitrobenzyl photoremovable groups with fluorescence uncaging reporting properties

2018

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Synthesis and evaluation of aromaticity and tautomerization of pyrazolopyridazin(on)es

Mengeş

Bildirici

2017

J Chem Sci

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Aromaticity of pyrazolopyridazin(on)es was investigated using NICS(0), NICS(1), NICSzz(1), FIPC-NICS and HOMA aromaticity indexes and it was observed that aromaticity of pyridazin(on)es was amenable to aromaticity of pyrazole and vice versa. Some tautomeric forms of pyridazinone were analyzed and the localized orbital locator maps, electron density maps, Fuzzy, Laplacian, and Mayer bond order methods showed dominant form. Different substituents, amine, chlorine, phenyl, methyl, hydrogen, substituted-phenyl, etc. on both the rings were chosen to search out the substituent effect. Aromaticity of pyrazolopyridazin(on)es was searched out in detail for the first time.

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Investigation of Keto-enol Tautomers during the Synthesis of Aryl-bis (2-hydroxy-1-naphthyl)Methanes

Cited by 2 publications

References 17 publications

o-Nitrobenzyl photoremovable groups with fluorescence uncaging reporting properties

o-Nitrobenzyl photoremovable groups with fluorescence uncaging reporting properties

Synthesis and evaluation of aromaticity and tautomerization of pyrazolopyridazin(on)es

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