JOURNAL OF FLUORINE CHEMISTRY 128(10) 1094-1097 2007年10月
Photoirradiation of the pentafluorophenyl-substituted Z-hemithioindigo 1 causes a novel type of photoinduced cyclization, to produce the intramolecularly cyclized alcohol 2 and its dehydrated ether 3. For this photoinduced cyclization, the o-fluor...
JOURNAL OF HETEROCYCLIC CHEMISTRY 44(2) 303-307 2007年3月 [査読有り]
2-(3,4,5,6-Tetrafluoro-2-hydroxyphenyl)imidazo[1,2-a]pyridine (1) emits long wavelength light around 540 nm both in polar and in nonpolar solvents. Zn2+ perchlorate in acetonitrile causes the intermediate wavelength emission around 430 nm, which i...
JOURNAL OF FLUORINE CHEMISTRY 127(8) 1073-1078 2006年8月 [査読有り]
2-(2-Hydroxyfluorophenyl)benzoxazole having an imidazole moiety 1 was synthesized by the two step reactions starting from 2-(pentafluorophenyl)benzoxazole. Protonation at the 3-imidazole nitrogen atom of 1 enhances the green emission around 500 nm...
K Tanaka   K Taguchi   S Iwata   T Irie   
SUPRAMOLECULAR CHEMISTRY 17(8) 637-642 2005年12月
The benzoyl-substituted hemithioindigo 1 with Z-configuration was obtained as the sole product from the reaction of 7-ethylbenzo[b]thiophen-3(2H)-one with phenylglyoxal. Irradiation of 1 produced the [2+4] cycloadduct 2, instead of the usual Z-E i...
K Tanaka   K Taguchi   S Iwata   H Obara   
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES 9(4) 262-267 2005年 [査読有り]
The large difference in the binding affinity of tetramethoxy-p-benzoquinone between 5,15-cis-bis(ureidophenyl)porphyrin and its zinc-porphyrin analogue enables construction of a reversible system in which tetramethoxy-p-benzoquinone moves between ...