2026-04-13T14:03:30Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/251712024-11-27T06:42:45Zcom_2072_452955com_2072_2054col_2072_453073

00925njm 22002777a 4500 dc Riesco-Llach, Gerard author Planas i Grabuleda, Marta author Feliu Soley, Lidia author Joule, John A. author 2024-06-12 3-Oxidopyraziniums are accessed from 2(1H)-pyrazinones via N-alkylation and then exposure of the resulting pyrazinium salts to mild base at room temperature. 3-Oxidopyraziniums react with acrylates in a 1,3-dipolar cyclisation producing 3,8-diazabicyclo[3.2.1]octanes. 1-(4-methoxybenzyl)-5,6-dimethyl-3-oxidopyrazinium (C14H16N2O2) dimerises at room temperature, forming a tetracyclic alcohol C28H34N4O5, the structure of which was elucidated using spectroscopic and X-ray analyses Reaccions d'addició Ciclització (Química) Compostos orgànics Addition reactions Ring formation (Chemistry) Organic compounds The cycloaddition chemistry of 3-oxidopyraziniums. Dimerisation of 1-(4-methoxybenzyl)-5,6-dimethyl-3-oxidopyrazinium