Text this

Number:

Provider:

CAPTCHA:

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

Please enter what you see:

Text this: Metal-free visible light photoredox enables generation of carbyne equivalents via phosphonium ylide C–H activation