發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Cobalt-catalyzed chelation-assisted insertion of C-C multiple bonds into C(sp2)-H bonds