Über die Einwirkung von Stickstoffdioxyd auf Tetraphenyl‐bernsteinsäuredinitril

Abstract

WTittiq, Pockele: Eiwiirhng von Stickatoffdiaxyd [Jahrg. 59 150. Georg W i t t i g and U t t a Pockele: e b e r die Einwirkung von Stickstoff dioxyd auf Tetraphenyl-bernsteineHuredinifril. Aus d. Chem. Institut d. Techn. Hochschule Braunschweip.' (Eingegangen am 9. M l r~ 1936.)Wie M'ittig u i d Petri') fanden, betragt die Halhwertszeitl) fur dieKadikal-Dissoziation des T e t r a p h e n y 1be r ns t ei n saiu r e d i n i t ril s (I +IT) bei 4(P rund 270 Min., hei 54O rund 80 Min.

The Preparation of Nitriles.

“…Aryl alkyl ketones are converted to cyanohydrins in poor yields and diaryl ketones not at all. Benzophenone cyanohydrin, which has been prepared by an indirect synthesis, is instantly and completely decomposed by traces of a basic catalyst (608). As mentioned earlier, the formation of cyanohydrins from ,/3-unsaturated ketones is complicated by the tendency for hydrogen cyanide to add to the olefinic double bond, although no difficulty is encountered with the corresponding aldehydes (399).…”

The Reactions of Nitrogen Tetroxide with Organic Compounds.

“…Wittig (257) studied one example in which a saturated molecule was split by nitrogen tetroxide. The dinitrile of tetraphenylsuccinic acid in chloroform treated with nitrogen tetroxide gave IV or V in better than 50 per cent yield.…”