Cycloaddition of Enamines with 1,4-Dimethoxy-2-butyne and 2-Butyne-1,4-diol Mediated by Titanium Tetrachloride

Enamines are versatile compounds capable of alkylations, acylations, cycloadditions and annulation cascades. They are also involved in a range of heterocycle-forming processes.1,2 The broad applica...