Microwave-assisted synthesis of sterically hindered 3-(5-tetrazolyl)pyridines
作者:Igor V. Bliznets、Andrei A. Vasil’ev、Sergey V. Shorshnev、Aleksandr E. Stepanov、Sergey M. Lukyanov
DOI:10.1016/j.tetlet.2004.01.153
日期:2004.3
Stericallyhindered 2,4-disubstituted 3-(5-tetrazolyl)pyridines were efficiently prepared from the corresponding nicotinonitriles using microwave technology.
使用微波技术从相应的烟腈有效地制备了位阻2,4-二取代的3-(5-四唑基)吡啶。
A Simple and Versatile Route to Novel Conjugated <i>β</i>-Enaminonitriles and Their Application for the Highly Regioselective Synthesis of Nicotinonitriles Using a Vilsmeier-Type Reagent
作者:Alan R. Katritzky、Anna Denisenko、Michael Arend
DOI:10.1021/jo990313g
日期:1999.8.1
A straightforward synthesis of conjugated beta-enaminonitriles from ketones and beta-aminocrotononitrile mediated by TiCl4 is described. The reaction of these novel dienamines with a Vilsmeier-type reagent provides a mild and highly regioselective route for the preparation of nicotinonitriles.
METHODS OF MAKING 2-HALONICOTINONITRILES
申请人:MCQUADE Tyler D.
公开号:US20160221951A1
公开(公告)日:2016-08-04
A method of making a 2-halonicotinonitrile comprises reacting an alkylidene nitrile with a C1-compound in an organic solvent and a dehydrating agent. The dehydrating agent substantially retards dimerization of the alkylidene nitrile during the reaction. The enamine intermediate that forms from the reaction is cyclized using a halide donor to make the 2-halonicotinonitrile.
US9951020B2
申请人:——
公开号:US9951020B2
公开(公告)日:2018-04-24
The Vinylogous Mannich Reaction: An Efficient Access to Substituted Nicotinonitriles
作者:Nikolaus Risch、Andreas Winter
DOI:10.1055/s-2003-42044
日期:——
A straightforward method for the preparation of substituted nicotinonitriles has been developed. Starting from conjugated β-enaminonitriles and iminium salts, this methodology establishes a convenient access to 6-aryl- (5), 6-amino- (16) and 6-carboxylic ester-substituted derivatives 14 and as well to acetic acid-substituted pyrroles 12.