In. Stankov et al., PHOTOMETRIC-DETERMINATION OF 3-QUINUCLIDINOL IN 3-QUINUCLIDINYL ESTERS OF SOME SUBSTITUTED HYDROXYACETIC ACIDS, Journal of analytical chemistry, 52(11), 1997, pp. 1103-1108
The Interaction of Bromocresol Green (blue) with 3-quinuclidinol and 3
-quinuclidinyl esters of substituted hydroxyacetic acids in organic so
lvent was studied. It was shown that, under these conditions, esters p
roduce yellowish orange complexes of composition I : 1, regardless of
the ratio between the concentrations of reagents, whereas 3-quinuclidi
nol can form complexes of composition I : 1 and 2 : 1, and the latter
is blue. A procedure for the spectrophotometric determination of 3-qui
nuclidinol in 3-quinuclidinyl esters of some substituted hydroxyacetic
acids was developed.