Literatura científica selecionada sobre o tema "Allene-Alkyne cross coupling"
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Artigos de revistas sobre o assunto "Allene-Alkyne cross coupling"
Cabezas, Jorge A., e Natasha Ferllini. "Regiospecific Palladium-Catalyzed Cross-Coupling Reactions Using the Operational Equivalent of 1,3-Dilithiopropyne". Synthesis 52, n.º 16 (7 de abril de 2020): 2387–94. http://dx.doi.org/10.1055/s-0039-1690895.
Texto completo da fonteShimp, Heidi L., Alissa Hare, Martin McLaughlin e Glenn C. Micalizio. "Allene–alkyne cross-coupling for stereoselective synthesis of substituted 1,4-dienes and cross-conjugated trienes". Tetrahedron 64, n.º 16 (abril de 2008): 3437–45. http://dx.doi.org/10.1016/j.tet.2008.02.015.
Texto completo da fonteShimp, Heidi L., e Glenn C. Micalizio. "An alkoxide-directed alkyne–allene cross-coupling for stereoselective synthesis of 1,4-dienes". Chemical Communications, n.º 43 (2007): 4531. http://dx.doi.org/10.1039/b708256h.
Texto completo da fonteZheng, Weixin, Yangfeng Wu, Fenfen Zheng, Linfeng Hu e Ya Hong. "Selective synthesis of α-methylenyl zirconacyclopentene via cross-coupling of alkyne and allene". Tetrahedron Letters 51, n.º 36 (setembro de 2010): 4702–4. http://dx.doi.org/10.1016/j.tetlet.2010.06.134.
Texto completo da fonteShimp, Heidi L., Alissa Hare, Martin McLaughlin e Glenn C. Micalizio. "Reprint of “Allene–alkyne cross-coupling for stereoselective synthesis of substituted 1,4-dienes and cross-conjugated trienes”". Tetrahedron 64, n.º 29 (julho de 2008): 6831–37. http://dx.doi.org/10.1016/j.tet.2008.03.086.
Texto completo da fonteZheng, Weixin, Yangfeng Wu, Fenfen Zheng, Linfeng Hu e Ya Hong. "ChemInform Abstract: Selective Synthesis of α-Methylenyl Zirconacyclopentene via Cross-Coupling of Alkyne and Allene." ChemInform 41, n.º 47 (28 de outubro de 2010): no. http://dx.doi.org/10.1002/chin.201047067.
Texto completo da fonteShimp, Heidi L., Alissa Hare, Martin McLaughlin e Glenn C. Micalizio. "ChemInform Abstract: Allene-Alkyne Cross-Coupling for Stereoselective Synthesis of Substituted 1,4-Dienes and Cross-Conjugated Trienes." ChemInform 39, n.º 40 (30 de setembro de 2008). http://dx.doi.org/10.1002/chin.200840057.
Texto completo da fonteShimp, Heidi L., e Glenn C. Micalizio. "ChemInform Abstract: An Alkoxide-Directed Alkyne—Allene Cross-Coupling for Stereoselective Synthesis of 1,4-Dienes." ChemInform 39, n.º 11 (11 de março de 2008). http://dx.doi.org/10.1002/chin.200811055.
Texto completo da fonteShimp, Heidi L., Alissa Hare, Martin McLaughlin e Glenn C. Micalizio. "ChemInform Abstract: Reprint of “Allene-Alkyne Cross-Coupling for Stereoselective Synthesis of Substituted 1,4-Dienes and Cross-Conjugated Trienes”." ChemInform 40, n.º 6 (10 de fevereiro de 2009). http://dx.doi.org/10.1002/chin.200906053.
Texto completo da fonteTeses / dissertações sobre o assunto "Allene-Alkyne cross coupling"
Christin, Orane. "Synthèse totale de l’énacyloxine IIa, un antibiotique d’origine naturelle au mécanisme d’action original". Electronic Thesis or Diss., Université Paris Cité, 2023. http://www.theses.fr/2023UNIP5197.
Texto completo da fonteIsolated in 1982 by Watanabe et al. from soil bacteria Frateuria sp. W-315, enacyloxin IIa is a polyenic antibiotic displaying a strong activity against both Gram-positive and Gram-negative bacteria as well as a slight activity against fungi. This rather complex polyketide consists of a 23 carbons linear chain bearing 6 stereogenic centers, whose one is chlorinated, alongside a conjugated chlorinated penta-ene attached to a cyclohexane with 3 stereogenic centers. The structural complexity of this target induces a high degree of synthetic difficulty involving the synthesis of the fragile polyene unit or the control of the halogenated carbon stereochemistry. Our retrosynthetic plan features the synthesis of fragments A, B and C prior to their assemblage through esterification and aldol reactions. The synthetic strategy developed for fragment C1-C16 relies on a key Pd(II)-catalyzed alkyne chloroallylation, resulting in the selective formation of the (Z)-vinyl chloride, followed by a Pd(II)/Cu(I)-catalyzed alkyne hydrocarbation of allenes and a final 1,2-elimination step to complete the polyenic chain formation. The synthesis of fragment A C1'-C6' relies on a ring closure metathesis, a Pd(0)-catalyzed carbonylation reaction, and a hydrogenation/isomerization one-pot sequence of the acrylate formed to generate the third stereogenic center. On the other hand, fragment C C17-C23 is obtained through a key L-prolinamide-catalyzed '-chlorination of aldehydes, resulting in the stereoselective formation of the desired chlorinated stereogenic center. Finally, the successful assemblage of fragments B and C was achieved through a diastereoselective Mukaiyama aldol reaction, providing access to the C1-C23 skeleton peculiar to the enacyloxin family. This manuscript also presents initial attempts to assemble fragments A and B