2-(Alkylamino)-4-cyclopentene-1,3-diones via Addition of Imidoyl Lithiates to Cyclobutenediones

Sun, Lijun, and Lanny S. Liebeskind. 1994. “2-(Alkylamino)-4-Cyclopentene-1,3-Diones via Addition of Imidoyl Lithiates to Cyclobutenediones”. Journal of Organic Chemistry 59 (22): 6856-58.