The Synthesis of Derivatives of α-Mercaptoamidines<sup>1,2</sup>
作者:Ludwig Bauer、Thomas L. Welsh
DOI:10.1021/jo01059a060
日期:1962.12
Sulfated tungstate catalyzed activation of nitriles: addition of amines to nitriles for synthesis of amidines
作者:Sachin D. Veer、Kamlesh V. Katkar、Krishnacharya G. Akamanchi
DOI:10.1016/j.tetlet.2016.07.073
日期:2016.9
the synthesis of amidines by direct nucleophilic addition of amines to nitriles using sulfated tungstate as heterogeneous catalyst is described. Highlight of the method is its applicability for the synthesis of amidines using a wide variety of amines including ammonia as ammonium acetate and nitriles. Catalyst is mildly acidic, stable, easy to prepare and separate from the reaction mass.