C 76 Convenient synthesis of building-blocks for pyridine/piperidine-decorated crown ethers [Electronic resource] / M. B. Nawrozkij, E. B. Gorbunov, V. L. Rusinov, V. N. Charushin // Macroheterocycles . - 2014. - Vol.7, №1. - С. 18-22. - Bibliogr. : p. 22 (19 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 2-VYNYLPYRIDINE -- EPOXIDATION -- HYDROXYLATION Аннотация: A convenient way to 1-(pyridin-2-yl)ethan-1,2-diol, 2-(oxiran-2-yl)pyridine and two diastereomeric forms of 1-(piperidin- 2-yl)ethan-1,2-diol, valuable building-blocks for the synthesis of functionalized crown ethers, has been developed. It is based on the Wagner oxidation or NBS-mediated epoxydation of 2-vinylpyridine, and the Schwenk-Papa reduction of 1-(pyridin-2-yl)ethan-1,2-diol, accompanied by fractional crystallization of a diastereo-meric mixture of the target product \\\\expert2\\NBO\\Macroheterocycles\\2014.7.1.18-22.pdf |