Photolysis cyclododecanone

Anodic oxidation in methanol of ethoxydichlorocyclopropanes (288) gave CljC CH—(CH2) +2C02Me (n = 2, 3, 4 yields 86, 77, 21 %, respectively).Nitrosation of cyclic ketones in the absence of added acid gives ring-cleaved products, e.g. (289) was obtained from cyclododecanone. Photolysis of epoxide (290) gave an oxa[13]... 

Much experimental and theoretical work has been done on flexible biradicals obtained by the photolysis of cyclododecanones. Field-dependent CIDNP... 

Figure 8. Time-dependent CIDNP intensities in the photolysis of cyclododecanone 1. The symbols show the H CIDNP signal of the a protons of the ketone, the solid line was calculated by the theoretical model of [55a], [Adapted from ref. [55a] with permission. Copyright 1989 Elsevier Science Publishers B.V.]...

Photolysis of 2-(2 -cyclopropylcyclopropyl)cycloalkanones (108 n = 1, 2) gave ring-expanded products e.g. (108 n = 1) gave a mixture of cyclododecanone (61 %) and 2-cyclopropylcyclononanone (20%). Ring expansion of cyclic mono- and diacetylenes by 4, 8 or 12 carbon atoms can be achieved by nickel-catalysed cyclooligomerization with buta-1,3-diene, followed by oxidative cleavage thus cyclo-tetradec-l,8-diyne was converted into cyclotriacontane. ... 

Reductive deoxygenation of cyclododecanyl pivalate by photolysis in the presence of trichlorosilane gave a mixture of cyclododecane and cyclododecanyl,2,2-dimethyl-propyl ether.The disulphonimide (350) reacts with DMSO and sodium bicarbonate to give a mixture of cyclododecenes (88 %) together with cyclododecanone (5... 

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