161126-79-0Relevant academic research and scientific papers
N-Thio- And N-selenophenacylaniidiries: Electrophilic activation as a route to some l-hetero-3-aza-4-dimethylaminobuta-l,3-dienes
Manh, Gabriel T.,Purseigle, Franck,Dubreuil, Didier,Pradere, Jean Paul,Guingant, Andre,Danion-Bougot, Renee,Danion, Daniel,Toupet, Loic
, p. 2821 - 2828 (2007/10/03)
The preparation of 2-phenyl-4-dimethylamino-l-aza-, 1-oxa-, 1-thia-, l-selena-3-azabuta-l,3-dienes as well as their 4-methyl derivatives is described following a new heteroatom interchange reaction process. Heteronucleophilic attack at one particular reactive site of bis-electrophilic amidinium salts is the key feature of the process. In addition, we also disclose that the substituted l-oxa-3-aza- and l,3-diazabuta-l,3-dienes can be obtained by a reactional transformation cascade initiated by either silver acetate addition or tosyl azide [3+2] cycloaddition onto the CS or CSe double bonds of the 1-thia- and l-selena-3-azabuta-l,3-diene analogues. The Royal Society of Chemistry 1999.
Synthesis and reactivity of N-selenoacylamidines precursors of selenoheterocycles
Purseigle, Franck,Dubreuil, Didier,Marchand, Anne,Pradere, Jean Paul,Goli, Martin,Toupet, Loic
, p. 2545 - 2562 (2007/10/03)
A new synthesis and the reactivity of stable selenaazadienes are discussed. Their dienic, electrophilic and nucleophilic character are used to prepare five and six membered selenoheterocycles. The easy access to selenazine, selenazinone, selenopyran, sele
