ケイソウ土に保持さ九た2,4-トルエンジスルホン酸を触媒とする置換ベンゼン類の硝酸によるニトロ化

抄録

The products obtained by the nitration of ethyl benzen, isopropyl benzene and halobenzenes with nitric acid and 2, 4-teluenedisulfonic acid (TDS), supported on diatomaceous earth (Celite-545), showed considerably higher para-ortho ratio (P/o) than that observed in the nitration with nitric acid and sulfuric acid (mixed acid nitration), similarly as the case ef nitration of toluene.
The results are shown in Table 2.
The nitration of e-xylene in a similar manner gave also high 4-nitro-o-xylene/3-nitro-e-xylene ratio and mononitration yield (3.02 and 90%) than those observed in the nitration with nitrie acid and sulfuric acid (O, 99 and 80%).