91735-79-4Relevant academic research and scientific papers
Synthesis and optical properties of difluorobora-s-diazaindacene dyes with trifluoromethyl meso-substituents
Sobenina, Lyubov N.,Petrova, Olga V.,Petrushenko, Konstantin B.,Ushakov, Igor A.,Mikhaleva, Albina I.,Meallet-Renault, Rachel,Trofimov, Boris A.
, p. 4107 - 4118 (2013/07/19)
A series of meso-CF3-4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) dyes with aryl and hetaryl substituents at the C-3 and C-5 positions, both symmetric and asymmetric, have been synthesized in 36-90 % yields by a new strategy involving as the key step the condensation of 2,2,2-trifluoro-1-(5- arylpyrrol-2-yl)-1-ethanols with diverse 2-arylpyrroles. The starting 2,2,2-trifluoro-1-(5-arylpyrrol-2-yl)-1-ethanols are easily prepared by reduction of the available 2-trifluoroacetyl-5-arylpyrroles. The synthesized dyes fluoresce in a longer wavelength region (626-698 nm) with high quantum yield (0.84-0.99). A new strategy for the synthesis of highly efficient symmetric and asymmetric BODIPY fluorophores that combine trifluoromethyl and 3,5-aryl substituents has been developed. The key step is the P 2O5-promoted condensation of 2,2,2-trifluoro-1-(5- arylpyrrol-2-yl)-1-ethanols with diverse 2-arylpyrroles. Copyright
PYRROLES FROM KETOXIMES AND ACETYLENE. 38. NEW REPRESENTATIVES OF TRIFLUOROACETYLPYRROLES. SYNTHESIS AND TRANSFORMATIONS
Korostova, S. E.,Mikhaleva, A. I.,Sobenina, L. N.,Shevchenko, S. G.,Sigalov, M. V.,et al.
, p. 39 - 43 (2007/10/02)
A series of previously unknown trifluoroacetyl derivatives of pyrroles were obtained with high yields by the reaction of pyrroles, including N-vinyl-substituted pyrroles, with trifluoroacetic anhydride in the presence of pyridine at room temperature.The s
