Metal-Free CH–CH-Type Cross-Coupling of Arenes and Alkynes Directed by a Multifunctional Sulfoxide Group
摘要:
A metal-free CH-CH-type coupling of arenes and alkynes, mediated by a multifunctional sulfoxide directing group, exploits nonprefunctionalized coupling partners, proceeds under mild conditions, is operationally simple, and exhibits high functional group tolerance. The products of the CH-CH coupling are highly versatile, and the metal-free process can be used for the construction and late-stage modification of important molecular scaffolds.
Nucleophilic<i>ortho</i>-Propargylation of Aryl Sulfoxides: An Interrupted Pummerer/Allenyl Thio-Claisen Rearrangement Sequence
作者:Andrew J. Eberhart、David J. Procter
DOI:10.1002/anie.201300223
日期:2013.4.2
A new direction: The nucleophilic ortho‐propargylation of aryl sulfoxides exploits intermolecular delivery of the nucleophile to sulfur followed by an intramolecular relay to carbon (see scheme). The simple, metal‐free procedure is general, regiospecific with regard to the propargyl nucleophile, and completely selective for products of ortho‐propargylation over allenylation.
Sulfoxide-Directed Metal-Free<i>ortho</i>-Propargylation of Aromatics and Heteroaromatics
作者:Andrew J. Eberhart、Harry J. Shrives、Estela Álvarez、Amandine Carrër、Yuntong Zhang、David J. Procter
DOI:10.1002/chem.201406424
日期:2015.5.11
exploits intermolecular delivery of a propargyl nucleophile to sulfur followed by an intramolecular relay to carbon. The operationally simple cross‐coupling procedure is general, regiospecific with regard to the propargyl nucleophile, and shows complete selectivity for products of ortho‐propargylation over allenylation. The use of secondary propargyl silanes allows metal‐free ortho‐coupling to form carbon–carbon
Derivatives of 4-aminopiperidine and their use as a medicament
申请人:Thurieau Christophe
公开号:US20090149652A1
公开(公告)日:2009-06-11
A subject of the present application is new derivatives of 4-aminopiperidines of formula
in which R
1
, R
2
and R
3
represent various radical, and their preparation processes by synthetic methods in parallel in liquid and solid phase. These products having a good affinity with certain sub-types of somatostatin receptors, they are particularly useful for treating the pathological states or diseases in which one (or more) somatostatin receptors are involved.