Organic Letters p. 1724 - 1727 (2012)
Update date:2022-08-05
Topics:
Jakab, Gergely
Tancon, Carlo
Zhang, Zhiguo
Lippert, Katharina M.
Schreiner, Peter R.
Bordwell's method of overlapping indicators was used to determine the pKa values of some of the most popular (thio)urea organocatalysts via UV spectrophotometric titrations. The incremental effect of CF3 groups on acidic strength was
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