The Behavior of o-Aroylbenzoic Acid Types in Acidic Media1

MS Newman, KG Ihrman

Index: Newman; Ihrman Journal of the American Chemical Society, 1958 ,  vol. 80, p. 3652,3656            

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Citation Number: 18

Abstract

FEBRUARY 5, 1! 358\!'. e show that 3-nitro-2-(2-thenoyl)-benzoic acid (111) rearranges to g- iiitro-3-(%-tliritoyl)-beiizoic acid (IV) in 10070 sulfuric acid at TO", contrary to two previous reports of other results. A probable reason for the previous reports is advanced. Trifluoroacetic acid, methanesulfonic and polyphosphoric acid are shoivn to be unsuitable acidic reagents for effecting the rearrangement of 111 to IV. Both 4-nitro-2-(2-thenoyl)- ...