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- W2021551797 abstract "Photolysis of3-(tert-butyldimethylsilyloxyphenyl)methylenemalonodinitrile(2) in a polar medium leads to C–Si cleavage via thepolarized singlet excited state. The thus formed tert-butylradicals diffuse out of cage and are trapped by further molecules of 2.In contrast, the photochemical alkylation of benzylidenemalonodinitrileby tert-butyldimethylsilyl phenyl ether occurs via theradical cation and requires phenanthrene sensitization. In an apolarsolvent, 2 undergoes only a slow dimerization and gives two (one main)cyclobutanes. Photoinduced cleavage is not observed neither with thecorresponding diester nor with the 2-silyloxy analogue of 2 (the lowestexcited singlet of the latter compound is an ICT state)." @default.
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- W2021551797 date "1997-01-01" @default.
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- W2021551797 title "Photochemistry of some trialkylsilyloxybenzylidenemalonic acid derivatives. C–Si bond fragmentation in a polarized excited state" @default.
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- W2021551797 doi "https://doi.org/10.1039/a608341b" @default.
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