Photochemical reactions of intramolecula
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C.P. Joshua; V.N.Rajasekharan Pillai
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Article
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1973
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Elsevier Science
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French
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Stilbenes' , diphenylamines2 and schiff bases 3 undergo photochemical cyclodehydrogenation in organic solvents. But azobenzene did not cyclize under these conditions4. The failure of azobenzene to photocyclize in organic solvents was attributed to the fact that the lowest excited state is of the n-r