Synthesis of 4-Alkylidene-2-(dimethylamino)methyl-4H-3,1-benzoxazines by the Reaction of Alkyl 2-Isocyanophenyl Ketones with Eschenmoser’s Salt
摘要:
4-Alkylidene-2-(dimethylamino)methyl-4H-3,1-benzoxazines could be prepared in one-pot by simply treating alkyl 2-isocyanophenyl ketones with dimethyl(methylene)ammonium iodide (Eschenmoser's salt) in dichloromethane at 0 degrees C without any catalysts.
4-Alkylidene-2-(dimethylamino)methyl-4H-3,1-benzoxazines could be prepared in one-pot by simply treating alkyl 2-isocyanophenyl ketones with dimethyl(methylene)ammonium iodide (Eschenmoser's salt) in dichloromethane at 0 degrees C without any catalysts.