Photolytic cleavage reactions (e.g., of o-nitrobenzyl, phenacyl, and nitrophenylsulfenyl
derivatives) take place in high yield on irradiation of the protected compound
for a few hours at 254–350 nm. For example, the o-nitrobenzyl group, used to
protect alcohols,13 amines,14 and carboxylic acids,15 has been removed by irradiation.
Protective groups that have been removed by photolysis are described at the appropriate
places in this book; in addition, the reader may wish to consult fi ve review
articles.16–20
Photolytic cleavage reactions (e.g., of o-nitrobenzyl, phenacyl, and nitrophenylsulfenylderivatives) take place in high yield on irradiation of the protected compoundfor a few hours at 254–350 nm. For example, the o-nitrobenzyl group, used toprotect alcohols,13 amines,14 and carboxylic acids,15 has been removed by irradiation.Protective groups that have been removed by photolysis are described at the appropriateplaces in this book; in addition, the reader may wish to consult fi ve reviewarticles.16–20
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