摘要:
A new variation of the Friedlander quinoline synthesis was devised based on the sequential reaction of ortho-lithiated N-t-Boc-anilines or N-pivaloylanilines with masked malondialdehyde derivatives [e.g., vinamidinium salts 1a and 1b, 3-(dimethylamino)acrolein (2), and 3-ethoxymethacrolein (3)] and subsequent acid-induced cyclization.