Mild and General Conditions for Negishi Cross-Coupling Enabled by the Use of Palladacycle Precatalysts
作者:Yang Yang、Nathan J. Oldenhuis、Stephen L. Buchwald
DOI:10.1002/anie.201207750
日期:2013.1.7
A wide range of biaryls were synthesized by palladium‐catalyzed Negishi cross‐couplings at ambient temperature or with low catalyst loading. This protocol features the use of a recently reported aminobiphenyl palladacycleprecatalyst to generate the catalytically active XPhosPd0 species. Significantly, a wide range of challenging heterocyclic and polyfluorinated aromatic substrates can be employed
A Mild Negishi Cross-Coupling of 2-Heterocyclic Organozinc Reagents and Aryl Chlorides
作者:Michael R. Luzung、Jigar S. Patel、Jingjun Yin
DOI:10.1021/jo1018798
日期:2010.12.3
A mild Negishi cross-coupling of 2-heterocyclic organozincreagents and aryl chlorides is described. The use of Pd2(dba)3 and X-Phos as a ligand provides high yields for many examples. An efficient method to generate the organozincreagents at roomtemperature is also demonstrated.
Compounds of formula (II), (IIIa) or (IIIb)
(variables are described in the specification) are prepared by fluorination of β,γ-unsaturated alkyl silanes. These compounds are useful as building blocks in the pharmaceutical industry.
[EN] PROCESS FOR PREPARING DIASTEREOMERICALLY ENRICHED PHOSPHORAMIDATE DERIVATIVES OF NUCLEOSIDE COMPOUNDS FOR TREATMENT OF VIRAL INFECTIONS<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE PHOSPHORAMIDATES ENRICHIS EN DIASTÉRÉO-ISOMÈRES DE COMPOSÉS DE NUCLÉOSIDES, DESTINÉS AU TRAITEMENT D'INFECTIONS VIRALES
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2014008236A1
公开(公告)日:2014-01-09
The present invention is directed to a process for preparing diastereomerically enriched nucleoside phosphoramidates having the formula I:
本发明涉及一种制备具有化学式I的对映异构体富集的核苷磷酰胺酯的方法。
Oxazinones and methods for their use and synthesis
申请人:Wolfe Saul
公开号:US20050124612A1
公开(公告)日:2005-06-09
The invention pertains, at least in part, to new intermediates and synthetic methods for the stereospecific synthesis of oxazinone compounds, which are useful, for example, as antibiotics. The invention also pertains to novel olefinic oxazinone compounds, methods for their synthesis, and methods of using these compounds for the synthesis of oxazinones. The invention also pertains to methods for using the compounds to treat bacterial associated states in subjects.