Stability and ring-shift tautomerization of cyclic anhydrides of benzenehexasulfonic acid.
Upon heating in a dry atmosphere, benzenehexasulfonic acid forms three cyclic anhydrides. Mono- and dianhydride do not hydrolyze readily due their flatter structures compared to the hydrolysis products. The trianhydride appears more to be reactive toward hydrolysis. In solutions, the mono- and dianhydride undergo ring-shift tautomerization, which is in the latter case shifted toward the para isomer.
Garanin
Evgeny M
EM
Kent State University, Kent, Ohio 44240, USA.
Tolmachev
Yuriy V
YV
Hoover
Robert R
RR
Adas
Sonya
S
Bunge
Scott D
SD
Gangoda
Mahinda
M
Khitrin
Anatoly K
AK
Woods
Stephan M
SM
Malkovskiy
Andrey
A
Solak
Nulifer
N
Wesdemiotis
Chrys
C