Die Plant Science Student Conference (PSSC) wird seit 20 Jahren im jährlichen Wechsel von Studierenden der beiden Leibniz-Institute IPK und IPB organisiert. Im Interview erläutern Christina Wäsch (IPK) und Carolin Apel (IPB),…
Über 600 Gäste kamen am 4. Juli ans IPB zur Langen Nacht, die Wissen schafft, um bei unserem Wissenschafts-Quiz-Parcours viel Neues zu erfahren und ihre Kenntnisse unter Beweis zu stellen. Unser Programm in diesem Jahr…
Mittersteiner, M.; Pereira, G. S.; Wessjohann, L. A.; Bonacorso, H. G.; Martins, M. A. P.; Zanatta, N.;Chemoselective O-alkylation of 4-(trifluoromethyl)pyrimidin-2(1H)-ones using 4-(iodomethyl)pyrimidinesACS Omega718930-18939(2022)DOI: 10.1021/acsomega.2c01925
This study reports two strategies for preparing O-alkyl derivatives of 6-substituted-4-(trifluoromethyl)pyrimidin-(1H)-ones: a linear protocol of alkylation,using a CCC-building block followed by [3 + 3]-type cyclocondensation with 2-methylisothiourea sulfate and a convergent protocol based on direct alkylation, using 4-(iodomethyl)-2-(methylthio)-6-(trihalomethyl)pyrimidines. It was found that thecyclocondensation strategy is not feasible; thus, the direct chemoselective O-alkylationwas performed, and 18 derivatives of the targeted pyrimidines were obtained in 70−98%yields. The structure of the products was unambiguously determined via single crystal X-ray analyses and two-dimensional nuclear magnetic resonance experiments.