, 27 (m, 4H), 8.28 (d, 2H, J = 9, Yellow solid. Yield: 87% (492 mg). Mp: 230-231 ? C. 1 H-NMR (300 MHz, CDCl 3 ): ? 7.17-7.07 (m, 16H), 7.33-7.27 (m, 8H), vol.7, p.13
HRMS (ESI/ASAP), m/z calculated for C 40 H 31 N 4 [M + H] + 567.2543, found 567.2546. 2,4,6-tris(4-Diphenylaminophenyl)pyrimidine (1c), Mp: >260 ? C. 1 H-NMR (300 MHz, CDCl 3 ): ? 7.11-7.06 (m, 6H), 7.18-7.15 (m, 18H), 7.32-7.27 (m, 12H), vol.3, p.13 ,
,
Beige solid. Yield: 87% (238 mg), The title compound was obtained according to the general procedure and purified by column chromatography ,
, Conclusions Push-pull pyrimidines substituted with a different number of either triphenylamine or 9-ethylcarbazole groups were prepared by Suzuki cross-coupling reaction from the corresponding chloropyrimidines and boronic acids. The molecules presented absorption wavelengths in the UV region and emitted violet-blue light in dichloromethane solution with a higher fluorescence quantum yield and a stronger ICT observed for the triphenylamine derivatives, CDCl 3 ): ? 1.45 (t, 6H, J = 6.9 Hz), 4.33 (q, 4H, J = 6.9 Hz), 7.53-7.30 (m, 8H), 8.32-8.24 (m, 5H), 8.99 (s, 2H), vol.9, p.6
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