Preparation of poly(2-pyridone-3,5-diyl)s with -(CH2)4-SO3M (M = H or Na) side chains was written by Yamamoto, Takakazu;Takei, Tohru;Kumagai, Naoto;Harada, Yosuke;Ohki, Takumi;Kudoh, Yasuo;Kojima, Takahiro;Koizumi, Take-aki;Shiramizu, Kohei;Abe, Masahiro;Oota, Masashi. And the article was included in Polymer in 2012.Application In Synthesis of 3,5-Dibromo-2-hydroxypyridine This article mentions the following:
Poly(2-pyridone-3,5-diyl)s with -(CH2)4-SO3M (M = H or Na) side chains have been prepared by nickel-complex promoted dehalogenative polycondensation. A composite film of the polymer with -(CH2)4-SO3H side chains and poly(vinyl alc.) showed a proton conductivity of 1.5 鑴?10-1 S cm-1 at 80 鎺矯 and 95% humidity. A copolymer with pyridine showed a high stability against oxidation by a Fenton reagent. In the experiment, the researchers used many compounds, for example, 3,5-Dibromo-2-hydroxypyridine (cas: 13472-81-6Application In Synthesis of 3,5-Dibromo-2-hydroxypyridine).
3,5-Dibromo-2-hydroxypyridine (cas: 13472-81-6) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of 閳?8.7 鑴?10閳? cm3璺痬ol閳?.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ璺痬ol閳? in the liquid phase and 140.4 kJ璺痬ol閳? in the gas phase. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Application In Synthesis of 3,5-Dibromo-2-hydroxypyridine