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Bibliographic Details
Main Author:	Christian Díaz-Oviedo
Format:	Artículo científico
Language:	es
Published:	Universidad Nacional de Colombia 2018
Subjects:	Química Wallach Leuckart tiramina carboxamida dimetilformamida
Online Access:	https://www.redalyc.org/articulo.oa?id=309055254001 https://www.redalyc.org/journal/3090/309055254001/ https://www.redalyc.org/journal/3090/309055254001/html/ https://www.redalyc.org/journal/3090/309055254001/309055254001.epub https://www.redalyc.org/journal/3090/309055254001/movil https://doi.org/10.15446/rev.colomb.quim.v47n1.63976
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Transamidación y transamidación-reducción de N-benciltiramina con DMF Christian Díaz-Oviedo Rodolfo Quevedo Química Wallach Leuckart tiramina carboxamida dimetilformamida La tiramina y la N-benciltiramina reaccionan con formaldehído para formar azaciclofanos por medio de condensaciones tipo Mannich aromáticas y reaccionan con aldehídos no enolizables para formar las respectivas bases de Schiff. En este artículo se presenta la síntesis inesperada de N-bencil-N-formiltiramina y N-bencil-N-metiltiramina por medio de reacciones de transamidación y de transamidación-reducción de N-benciltiramina con N,N-dimetilformamida. Para explicar el curso de la reacción se propuso un mecanismo que involucra la formilación de N-benciltiramina y posterior reducción de Leuckart-Wallach inducida por ácido fórmico generado in situ. 2018 artículo científico 0120-2804 https://www.redalyc.org/articulo.oa?id=309055254001 https://www.redalyc.org/journal/3090/309055254001/ https://www.redalyc.org/journal/3090/309055254001/html/ https://www.redalyc.org/journal/3090/309055254001/309055254001.epub https://www.redalyc.org/journal/3090/309055254001/movil https://doi.org/10.15446/rev.colomb.quim.v47n1.63976 es http://www.redalyc.org/revista.oa?id=3090 Revista Colombiana de Química application/pdf Universidad Nacional de Colombia Revista Colombiana de Química (Colombia) Num.1 Vol.47

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* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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