Mild, visible light-mediated decarboxylation of aryl carboxylic acids to access aryl radicals
作者:L. Candish、M. Freitag、T. Gensch、F. Glorius
DOI:10.1039/c6sc05533h
日期:——
Herein we present the first example of aryl radical formation via the visible light-mediated decarboxylation of aryl carboxylic acids using photoredox catalysis.
STRAIGHTFORWARD ENTRY TO 7-AZABICYCLO[2.2.1]HEPTANE-1-CARBONITRILES AND SUBSEQUENT SYNTHESIS OF EPIBATIDINE ANALOGUES
申请人:STEVENS Christian
公开号:US20090275616A1
公开(公告)日:2009-11-05
The present invention relates to a group of substituted-7-azabicyclo-[2.2.1]heptyl derivatives with biological activity. The present invention also relates to synthetic methods for producing said substituted-7-azabicyclo-[2.2.1]heptyl derivatives. The present invention also relates to certain intermediates for producing such substituted-7-azabicyclo-[2.2.1]heptyl derivatives, as well as a synthetic method for producing such intermediates. The present invention also relates to pharmaceutical compositions comprising such substituted-7-azabicyclo-[2.2.1]heptyl derivatives, as well as their use as medicaments for the treatment of diseases mediated by a Nicotinic Acetylcholine Receptor or a receptor being a member of the Neurotransmitter-gated Ion Channel Superfamily, such as pain, Alzheimer's disease, Parkinson's disease, schizophrenia, epilepsy and nicotine addiction.
Triphenylphosphine derivative, production process therefor, palladium complex thereof, and process for producing biaryl derivative
申请人:——
公开号:US20030065208A1
公开(公告)日:2003-04-03
Provided are a novel triphenyl phosphine derivative synthesized from a triphenylphosphine and a hydroxy-containing lactone; a palladium and a nickel complexes comprising the derivative as a ligand; and a process for preparing a biaryl derivative using the complex as a catalyst. A product can be easily separated from a catalyst or a phosphorus compound, and biaryl derivative can be synthesized in a higher yield, by using the complex of the present invention as a catalyst.
Directed Deprotonation−Transmetalation as a Route to Substituted Pyridines
作者:Gunter Karig、James A. Spencer、Timothy Gallagher
DOI:10.1021/ol006986z
日期:2001.3.1
3-bromopyridine, followed by Li/Zn transmetalation and Pd-mediated coupling processes, provides a flexible entry to 4-substituted and 3,4-disubstituted pyridines. Application of a similar sequence to 2-bromopyridine (with LDA as base) provides 2,3-disubstituted pyridines, but using lithium 2,2,6,6-tetramethylpiperidide (LiTMP) provides access to both the 2,3- and 2,4-disubstituted isomers.
SUBSTITUTED 7-AZABICYCLO[2.2.1]HEPTYL DERIVATIVES USEFUL FOR MAKING PHARMACEUTICAL COMPOSITIONS
申请人:STEVENS Christian
公开号:US20100093807A1
公开(公告)日:2010-04-15
This invention provides 1-substituted-7-azabicyclo[2.2.1]heptyl derivatives, intermediates and methods for producing them, which are therapeutic agents useful for the prevention and treatment of central nervous system disorders and diseases mediated by a Nicotinic Acetylcholine Receptor such as Alzheimer's disease, Parkinson's disease, schizophrenia, epilepsy, pain, nicotine addiction and dementia.