Text this

Number:

Provider:

CAPTCHA:

  ______   _    _      _____   __   __    ____    
 /_   _// | || | ||   / ___//  \ \\/ //  |  _ \\  
   | ||   | || | ||   \___ \\   \ ` //   | |_| || 
  _| ||   | \\_/ ||   /    //    | ||    | .  //  
 /__//     \____//   /____//     |_||    |_|\_\\  
 `--`       `---`   `-----`      `-`'    `-` --`

Please enter what you see:

Text this: Intramolecular acylation of α-sulfinyl carbanions. A simple preparation of 4-oxygenated spiro[4.n]alk-2-ene-1-ones