Aromatic compounds photorearrangement

This chapter deals with the photoisomerization, photoaddition and cycloaddition, photosubstitution, intramolecular photocyclization, intra- and inter-molecular photodimerization, photorearrangement reactions of aromatic compounds and related photoreactions. 

The photochemistry of aromatic compounds is classified into the same categories adopted in the previous reviews in the series. The photoisomerization of arylalkenes, photoaddition and cycloaddition to aromatic rings, photosubstitution, photorearrangement reactions have less appeared in the period (2010-2011) considered. On the other hand, the photo-chromism including photoisomerization of azobenzenes and intramolecular photocyclization and cycloreversion of 1,2-diarylethenes, and the photodimerization have been widely developed. Supramolecular Photochemistry as a series of Molecular and Supramolecular Photochemistry was edited by Ramamurthy and Inoue in the period. In addition, it should be noteworthy that so many photochemical reactions in solid and/or crystalline states have appeared and developed. 

Formation of charge-transfer complexes between aromatic amines and nitro-compounds is well known. Compound [77] undergoes an interesting photorearrangement to give [78] (Mutai and Kobayashi, 1981). The reactivity... 

Since the 1960s, numerous investigations have been carried out on the nature of the CN and NN double bond photoisomerization and the competitive nature of the ,Z-isomerization with other processes, such as photocychzation, photoreduction and photorearrangement. The variety of substrates studied included oxime, oxime ethers, aliphatic and aromatic azo compounds, azoxy compounds, hydra-zones, and Schiff bases. The accumulated results were the subjects of several comprehensive and thorough review articles by Wettermark, Padwa, Pratt, Griffiths, Engel, Diirr, and Taylor. ... 

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