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- W2017282783 endingPage "77" @default.
- W2017282783 startingPage "39" @default.
- W2017282783 abstract "This chapter describes photoremovable protecting groups based on photoenolization. A series of useful molecular systems known as phototriggers, photoswitches, photocaging groups, or photoremovable protecting groups have been used in a wide variety of applications. The most extensively used photoremovable protecting groups are based on o-nitrotoluene derivatives, which, on exposure to light, undergo intramolecular H-atom abstraction to form photoenols, followed by the elimination of their protected or caged substrate. Photoremovable protecting groups that use photoenolization of o-alkyl arylketones to release their protected group or caged substrate can be categorized into two major groups. First, there are arylketones that have a good leaving group on either the o-alkyl substituent or the α-position next to the aryl ketone. The second category of photoremovable protecting groups achieves the release of the caged compound by intramolecular lactonization of the photoenol alcohol moiety with an ester group. The reaction mechanism of photorelease from esters was determined using transient spectroscopy. Photoremovable protecting groups release their protected molecule through intramolecular lactonization, but the photorelease is initiated by cis– trans isomerization and the rate constants of release for the photoenols depend on the structure of the leaving group as well as the photoenols." @default.
- W2017282783 created "2016-06-24" @default.
- W2017282783 creator A5050315185 @default.
- W2017282783 creator A5062368024 @default.
- W2017282783 creator A5068964271 @default.
- W2017282783 date "2009-01-01" @default.
- W2017282783 modified "2023-10-10" @default.
- W2017282783 title "Photoremovable protecting groups based on photoenolization" @default.
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