Reference

The substituent effects in thiophene compounds

The substituent effects in thiophene compounds. I. Proton NMR and IR studies in methyl (substituted 2-thiophenecarboxylates). Satonaka, Hajime (Ind. Res. Inst. Kanagawa Prefect., Yokohama 236, Japan). Bull. Chem. Soc. Jpn., 56(8), 2463-8 (English) 1983. CODEN: BCSJA8. 22913-26-4 and 17573-92-1 which are cas registry numbers are also used here. ISSN: 0009-2673. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) The 1H NMR and the IR CO group stretching frequencies of Me (3-, 4-, and 5-substituted 2-thiophenecarboxylate)s are obsd. Good linear correlations between the chem. shifts of the ring protons in Me (4- and 5-substituted 2-thiophenecarboxylate)s and those of the corresponding protons in substituted thiophenes were obsd. The coupling consts. in Me (substituted 2-thiophenecarboxylate)s gave good correlations against the corresponding ones in substituted thiophenes. The IR carbonyl stretching frequencies in Me (5-substituted 2-thiophenecarboxylate)s were correlated reasonably well with the chem. shifts of 5-protons in 2-substituted thiophenes. The coupling consts. in Me 2-thiophenecarboxylate series varied linearly with the electronegativities of the substituents. .

Electrophotographic toner containing conductive polymer on the surface

Electrophotographic toner containing conductive polymer on the surface. Watanuki, Toshiaki; Kono, Michiyuki; Isa, Isao (Japan Carlit Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 03100561 A2 25 Apr 1991 Heisei, 4 pp. (Japan).Some commonly used reagents like 17573-92-1 and 109-97-7 are used in this experiment. CODEN: JKXXAF. CLASS: ICM: G03G009-08. APPLICATION: JP 89-236941 14 Sep 1989. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) The title toner is prepd. by adhering an elec. conductive polymer on the surface of the core substance. The toner is easy to prep., provides clear images without fog and shows good moisture resistance. Thus, Bu acrylate-styrene copolymer, magnetite, and polyethylene wax were kneaded, pulverized, and added to an aq. FeCl3 soln., and pyrrole was added to the mixt. to give a conductive magnetic toner. .