293732-19-1Relevant academic research and scientific papers
Enantioselective Palladium-Catalyzed Heck-Heck Cascade Reactions: Ready Access to the Tetracyclic Core of Lycorane Alkaloids
Coya, Estibaliz,Sotomayor, Nuria,Lete, Esther
supporting information, p. 3206 - 3214 (2015/11/03)
A rapid and efficient access to a wide variety of enantiomerically enriched C-11b substituted lycorane analogues can be achieved via a catalytic asymmetric Heck-Heck 6-exo/6-endo cascade reaction in the presence of (R)-BINAP.
Benzannulated cyclooctanol derivatives by samarium diiodide induced intramolecular carbonyl-alkene coupling - Scope, limitations, stereoselectivity
Reissig, Hans-Ulrich,Khan, Faiz Ahmed,Czerwonka, Regina,Dinesh, Chimmanamada U.,Shaikh, Aarif L.,Zimmer, Reinhold
, p. 4419 - 4428 (2007/10/03)
A series of γ-oxo esters 27-34 was prepared from methyl 2-silyloxycyclopropanecarboxylates 1-9 as key building blocks in a flexible modular synthesis. Their samarium diiodide promoted cyclization to benzannulated cyclooctanol derivatives was systematicall
An efficient entry to pyrrolo[1,2-b]isoquinolines and related systems through Parham cyclisation
Ruiz, Javier,Ardeo, Ainhoa,Ignacio, Roberto,Sotomayor, Nuria,Lete, Esther
, p. 3311 - 3324 (2007/10/03)
Aryllithiums generated by lithium-iodine exchange undergo intramolecular cyclisation to give pyrrolo[1,2-b]isoquinolines, in high yields. The best results were obtained when Weinreb or morpholine amides were used as internal electrophiles. The procedure h
NOVEL HETEROCYCLIC COMPOUNDS AS HSP90-INHIBITORS
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Page/Page column 323, (2008/06/13)
Novel heterocyclic compounds are described and demonstrated to have utility as Heat Shock Protein 90 (HSP90) inhibiting agent. Method of synthesis and use of such compounds are also described.
Parham-type cycliacylation with Weinreb amides. Application to the synthesis of fused indolizinone systems
Ruiz, Javier,Sotomayor, Nuria,Lete, Esther
, p. 1115 - 1117 (2007/10/03)
(Matrix presented) Weinreb amides behave as efficient internal electrophiles in Parham-type cycliacylation reactions. Thus, aryl- and heteroaryllithiums generated by lithium-halogen exchange undergo intramolecular cyclization to give fused indolizinone systems as pyrrolo[1,2-b]isoquinolines, thieno[2,3-f]indolizinones, and pyrrolo[1,2-b]acridinones in high yields.
Carbopalladation of nitriles: Synthesis of benzocyclic ketones and cyclopentenones via Pd-catalyzed cyclization of ω-(2-iodoaryl)alkanenitriles and related compounds
Pletnev, Alexandre A.,Larock, Richard C.
, p. 9428 - 9438 (2007/10/03)
An efficient procedure for the synthesis of 2,2-disubstituted benzocyclic ketones by intramolecular carbopalladation of nitriles has been developed. The cyclization of substituted 3-(2-iodoaryl)-propanenitriles affords indanones in high yields. The reaction is compatible with a wide variety of functional groups. This methodology has been extended to the synthesis of tetralones and cyclopentenones.
A Convenient Strategy for the Synthesis of 4,5-Bis(o-haloaryl)isoxazoles
Olivera, Roberto,SanMartin, Raul,Dominguez, Esther,Solans, Xabier,Urtiaga, Miren Karmele,Arriortua, Maria Isabel
, p. 6398 - 6411 (2007/10/03)
A series of new 1,2-bis(o-haloaryl)ethanones is efficiently prepared and applied to the synthesis of 4,5-bis(o-haloaryl)isoxazoles. Isolation of intermediate hydroxyisoxazolines, which are structurally examined, provides a definitive proof for a heterocyclization mechanism based on an amine exchange process. The isolation and X-ray crystallographic studies of significant side products such as benzamides and triarylpropionitriles are also described.
