The Synthesis of Four Isomeric Diiodo-m-xylenes. Their Isomerization in Sulfuric and Polyphosphoric Acids

H Suzuki, K Maruyama, R Goto

Index: Suzuki,H. et al. Bulletin of the Chemical Society of Japan, 1965 , vol. 38, p. 1590 - 1595

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Citation Number: 10

Abstract

Four isomeric diiodo-m-xylenes have been synthesized and their isomerization in concentrated acids investigated in order to elucidate the mechanism of the new rearrangement observed in the Jacobsen reaction of 2-iodo-m-xylene. 2, 4-and 4, 5-Diiodo- m-xylene, in the presence of cold sulfuric or hot polyphosphoric acid, isomerize to 4, 6-and 2, 5-diiodo-m-xylene respectively. All four isomers readily undergo disproportionation with ...