Photochemical solid-state reactions

Argyroponlos, D. S., and Snn, Y, Photochemically induced solid-state degradation, condensation, and rearrangement reactions in lignin model compounds and milled wood iignin, Photochem. andPhotobiol. 64(3), 510-517 (1996). 

DS Argyropoulos and Y Sun. Photochemically Induced Solid-State Degradation, Condensation, and Rearrangement Reactions in Lignin Model Compounds and Milled Wood Lignin. Photochem Phorobiol 64 510-517, 1996. 

Solid state photochemical reactions of transition metal coordination compounds. E. L. Simmons and W. W. Wendlandt, Coord. Chem. Rev., 1971, 7.11-27 (88). 

Consider alternative polymerization processes in solid state, inducing the polymerization reaction of N3P3CI6 thermally [40-42],photochemically [61, 67,68],y-radiolytically [66,210], using X-rays [74,75,90] or electron irra-... 

Thermal and photochemical reactions in the solid state which were studied before 1999 are summarized in reviews [1] and books [2]. 

Much more efficient enantioselective solid-state reactions can be accomplished by photochemical reactions. Some new results are summarized in the following section. 

While the examples in Scheme 7.16 hinted at the practicality of the solid state photodecarbonylation of ketones, the factors controlling this reaction remained unknown until very recently. As a starting point to understand and predict the photochemical behavior of ketones in terms of their molecular structures, we recall that most of the thermal (kinetic) energy of crystals is in the form of lattice vibrations. 

Figure 7.24. Solid-state photochemical decarbonylation model for ketones. The dashed path corresponds to the experimentally determined energies of acetone (in kcal/mol). The effects of substituents with radical stabilizing energies (RSEs) are illustrated by the solid line in the reaction coordinate. See color insert.

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