Efficient synthesis of 2-imino-1,2-dihydroquinolines and 2-immothiochromenes via copper-catalyzed domino reaction

A domino approach to 2-imino-1,2-dihydroquinolines and 2-imino-thiochrornenes from sulfonyl azides, alkynes, and 2-acyl anilines or the potassium salt of 2-mercapto-benzaldehyde has been developed. This one-pot method is efficient and versatile. (c) 2007 Elsevier Ltd. All rights reserved.