Asymmetric photocatalysis

In the present edition some space is dedicated to special topics such as electrocatalysis, photocatalysis, asymmetric catalysis, phase-transfer catalysis, environmental catalysis, and fine chemicals manufacture. On the basis of fundamental reaction engineering equations, examples for calculation and modeling of catalysis reactors are given with the easy-to-learn PC program POLYMATH. Well over 170 exercises help die reader to test and consolidate the gained knowledge. 

Evidence that stereoelectronic effects are important has been obtained by studying the intramolecular deprotonation selectivity in asymmetric polymethylbenzenes, which is the same in photoinduced SET and in activation by inorganic oxidants, or the methyl vs. iso-propyl selectivity in cymenes. When the benzyl radicals are highly stabilized, they undergo dimerization. More interestingly from the synthetic point of view, these may be used for the photoinduced benzylation of electrophilic alkenes both by using molecular sensitizers such as DCN (1,4-dicyanonaphthalene, see Equation 4.11) and by using titanium dioxide powder photocatalysis, as well as for selective oxidation at the benzylic position " " and photoinduced nitration with tetranitromethane. ... 

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