Alkanes nitro-, decomposition

The transformation of l-methylthio-l-(methylsulfonyl)alkanes (254) to methyl esters can be efficiently carried out by oxidation or by a-chlorination followed by methanolysis (equation 152)145. The lithium or the sodium salt of (phenylsulfonyl)nitromethane (256) is a very useful reagent for the preparation of higher homologues of nitromethanes by alkylation since the salts are air insensitive, non-hygroscopic, and easily handled without decomposition. The oxidation of the resulting secondary a-nitro sulfone (257) gives... 

Nature of the Irradiation Source. The degradation of TBP-diluent in contact with an aqueous phase did not reveal any qualitative influence of the nature of the radiation (y, p, a, accelerator radiation). Moreover, the yield value of the decomposition products of TBP (8, 9,11, 26, 84), nitro and carbonyl products (RN02, RN03, RCOOH, and RCOR ) (16), alkanes (C5-C8), and butanol (8) were almost identical, whatever the nature of radiations. Nevertheless, after radiolysis of TBP in n-dodecane without aqueous solution, the yield of H2MBP was substantially lower under a-irradiation than under y-irradiation (Ga (H2MBP) = 0.158 and Gt(H2MBP) = 0.443) (5). 

---