Cobalt-Catalyzed Cross-Coupling of 3- and 4-Iodopiperidines with Grignard Reagents
摘要:
AbstractA cobalt‐catalyzed cross‐coupling between 3‐ and 4‐iodopiperidines and Grignard reagents is disclosed. The reaction is an efficient, cheap, chemoselective, and flexible way to functionalize piperidines. This coupling was used as the key step to realize a short synthesis of (±)‐preclamol. Some mechanistic investigations were conducted that highlight the formation of radical intermediates.
formation of organozincreagents and subsequent cross-coupling with aryl halides and activated carboxylic acids is reported. Formation of organozincreagents is achieved by pumping organic halides, in the presence of ZnCl2 and LiCl, through an activated Mg-packed column under flow conditions. This method provides efficient in situ formation of aryl, primary, secondary, and tertiary alkyl organozinc reagents
Oximes and hydrazones that are useful in treating sexual dysfunction
申请人:Kolasa Teodzyj
公开号:US20050176727A1
公开(公告)日:2005-08-11
The present invention relates to oximes and hydrazones of formula (I)
for the treatment of sexual dysfunction and to compositions containing compounds of formula (I) for the treatment of sexual dysfunction.
Sustainable Route Toward
<i>N</i>
‐Boc Amines: AuCl
<sub>3</sub>
/CuI‐Catalyzed
<i>N</i>
‐
<i>tert</i>
‐butyloxycarbonylation of Amines at Room Temperature
作者:Yanwei Cao、Yang Huang、Lin He
DOI:10.1002/cssc.202102400
日期:2022.2.18
Boc-kle up: An atom-economic synthesis of N-tert-butoxycarbonyl (N-Boc) amines from amines, t-butanol, and CO is reported at room temperature with commercially available AuCl3/CuI as catalysts. Gram-scale preparation of medicinally important N-Boc amine intermediates is achieved, which demonstrates a potential application prospect in industrial syntheses.
Boc-kle up :报道了在室温下使用市售的 AuCl 3 /CuI 作为催化剂,由胺、叔丁醇和 CO以原子经济方式合成N-叔丁氧羰基 ( N - Boc) 胺。实现了具有重要药用价值的N -Boc 胺中间体的克级制备,在工业合成中具有潜在的应用前景。
[EN] PYRROLO[2,3-b] PYRIDINE DERIVATIVES ACTIVE AS KINASE INHIBITORS, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITION COMPRISING THEM<br/>[FR] DERIVES PYRROLO[2,3-B]PYRIDINE AGISSANT COMME INHIBITEURS DES KINASES, PROCEDE POUR LEUR ELABORATION, ET COMPOSITIONS PHARMACEUTIQUES LES COMPRENANT
申请人:PHARMACIA ITALIA SPA
公开号:WO2005063747A1
公开(公告)日:2005-07-14
Compounds which are pyrrolo[2,3-b]pyridine derivatives or pharmaceutically acceptable salts thereof, their preparation process and pharmaceutical compositions comprising them are disclosed; these compounds are useful in the treatment of diseases caused by and/or associated with an altered protein kinase activity such as cancer, cell proliferative disorders, Alzheimer's disease, viral infections, auto-immune diseases and neurodegenrative disorders; also disclosed is a process under SPS conditions for preparing the compounds of the invention and chemical libraries comprising a plurality of them.