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Oda "Synthesis and emission behavior of 1,3-diarylisobenzofuran-
The room-temperature absorption and fluorescencemaxima of fluoro-, chloro-, bromo- and iodo-substituted derivatives ofBF2DBM in THF are red-shifted by about 2-10 nm relative tothe corresponding peaks of the parent BF2DBM.
Introduction of cyano and aryl groups to the thiophene moiety of the -cyclohexyl product was achieved by metal-catalyzed coupling reactions via its bromo derivative.
11-Step Total Synthesis of Pallambins C and D, J.
N2 - 1,2-Difluoro-3,4,5,6-tetraiodobenzene, 1,3-difluoro-2,4,5,6- tetraiodobenzene, 1,4-difluoro-2,3,5,6-tetraiodobenzene and 1-fluoro-2,3,4,5,6- pentaiodobenzene were prepared by oxidative iodination of fluorinated benzenes. Sonogashira cross-coupling reactions of these fluorinated periodobenzenes afforded fluorescent penta- and tetraalkynylfluorobenzenes in high yields.
AB - 1,2-Difluoro-3,4,5,6-tetraiodobenzene, 1,3-difluoro-2,4,5,6- tetraiodobenzene, 1,4-difluoro-2,3,5,6-tetraiodobenzene and 1-fluoro-2,3,4,5,6- pentaiodobenzene were prepared by oxidative iodination of fluorinated benzenes. Sonogashira cross-coupling reactions of these fluorinated periodobenzenes afforded fluorescent penta- and tetraalkynylfluorobenzenes in high yields.
Scalable Synthesis of Cortistatin A and Related Structures, J.
Introduction of a cyano group to the thiophene moiety of the -cyclohexyl product was achieved by copper-mediated coupling reaction via its bromo derivatives and Mirozoroki-Heck reaction of thε
After dryness over Na2SO4, the solvent was evaporated and the residue was purified by silica gel chromatography (CHCl3) to give 96 mg of 17 (53% recovery), followed by 26.0 mg of 19 (32% based on consumed 17) as colorless microcrystals.
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Enantiospecific Total Syntheses of Kapakahines B and F, J.
After dryness over Na2SO4, the solvent was evaporated and the residue was purified by silica gel chromatography (CHCl3/hexane = 3/1) to give 252 mg of 17 (96%) as colorless microcrystals, followed by a trace amount of 18.
Total Syntheses of (±)-Massadine and Massadine Chloride, J.
Theconformational structure and electronic spectral properties ofhalogenated BF2DBMs have been modeled by DFT/TDDFTcalculations at the PBE0/SVP level of theory.
Total Synthesis of (±)-Axinellamines A and B, Angew.
The absorptions shift with a hyperchromic effect depending on the substituents at the para position of the phenyl group and similarly emission wavelength shifts, clearly indicating that
Completion and Synthesis of Advanced Analogs, J.
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The Reaction of IBX with Anilides and Related Compounds, Angew.
found that benzothiophene can be brominated by NBS in refluxing acetic acid, the reaction of 6c under the same conditions in refluxing acetic acid required a longer reaction time and the yield of 17 was found to be moderate.
Synthesis, electrochemical and photophysical properties …
177-184.A series of (dibenzoylmethanato)boron difluoride (BF2DBM)derivatives with a halogen atom in one of the phenyl rings at thepara-position were synthesized and used to elucidate the effects ofchanging the attached halogen atom on the photophysical properties ofBF2DBM.
Synthesis, Self-Assembly and Photophysical Properties …
Gel permeationchromatography (GPC) analysis of the polyamides showed theweight-average molecular weight was about 23,626-23,736, and thetemperature at 5% weight loss determined by thermogravimetric analysis(TGA) was above 216 °C.
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