BF<sub>3</sub>-Etherate-Promoted Cascade Reaction of 2-Alkynylanilines with Nitriles: One-Pot Assembly of 4-Amido-Cinnolines
作者:Gopal Chandru Senadi、Babasaheb Sopan Gore、Wan-Ping Hu、Jeh-Jeng Wang
DOI:10.1021/acs.orglett.6b01207
日期:2016.6.17
2-alkynylanilines is described. This method achieves the formation of two new C–N bonds through a reaction sequence of diazotization with t-BuONO, nucleophilic addition of the alkyne to the BF3-coordinated diazonium ion, followed by nitrile addition to the intermediary vinyl cation and hydrolysis. The method provides efficient and general access to a variety of 4-amido-cinnolines. Notable features of the method
Cycloaddition of 1,4-Diaryl-1,3-butadiynes with Nitriles: An Atom-economic One-pot Approach to Benzo[<i>f</i>]quinazolines
作者:Lichen Yang、Ruimao Hua
DOI:10.1246/cl.130206
日期:2013.7.5
A one-pot synthesis of benzo[f]quinazoline by a novel cycloaddition of 1,4-diaryl-1,3-butadiynes with nitriles in the presence of trifluoromethanesulfonic acid at 120 °C is developed.
new one-pot synthesis of 3-arylisoquinolines was accomplished by reaction of deoxybenzoins with an excess of nitriles and phosphorus pentoxide at room temperature. The usefulness of this synthesis was demonstrated by the facile preparation of 1-alkyl, 1-alkenyl, and 1-aryl substituted 3-aryl-isoquinolines and on a preparative scale. The effect of nitrile type and deoxybenzoinsubstitution pattern on