Nitrosamines configuration

For alkyl-substituted A-nitrosazetidines, it was shown that the CD spectra can be interpreted on the basis of conformational diastereoisomerism, taking into account the nonplanarity of the nitrosazetidine chromophore137. For a particular configuration, the CE sign of the n - tt transition in the 350-400 nm region is determined by the intrinsic chirality of the chromophore and obeys a spiral rule, the same as that for nonplanar nitrosaziridines where the absence of the local plane of symmetry in the nitrosamine chromophore does not permit the use of the planar sector rule 148. 

Nitrosamides and nitrosamines exhibit considerably different reaction patterns when thermolysed or photolysed. The differences are discussed in relation to the ground state electronic configurations of these two classes of nitroso compounds. At -150 ,... 

Figure 11. Correlation of the induced Cotton Effect with nitrosamines and chiral alcohols and the configuration of the alcohol...

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