Ring expansion of some 4-aminoazetidin-2-ones into 4-amino-5-iminopyrrolidin-2-ones
摘要:
Ring opening of 4-aminoazetidin-2-ones of three series (1-benzazepine, quinoline and linear analog) using trimethylsilyl cyanide (TMSCN) led stereospecifically to beta-cyanoamides which could cyclize into 4-amino-5-iminopyrrolidin-2-ones in the presence of AlCl3. These heterocycles were also prepared by one-pot reaction (TMSCN + AlCl3). A structural study of these compounds was performed, including X-ray.