أرسل هذا في رسالة قصيرة: Intramolecular acylation of α-sulfinyl carbanions. A simple preparation of 4-oxygenated spiro[4.n]alk-2-ene-1-ones

             ___      _____      ___      _____   
    ___     / _ \\   / ____||   / _ \\   / ____|| 
   /   ||  | / \ || / //---`'  | / \ || / //---`' 
  | [] ||  | \_/ || \ \\___    | \_/ || \ \\___   
   \__ ||   \___//   \_____||   \___//   \_____|| 
    -|_||   `---`     `----`    `---`     `----`  
     `-`