摘要:
Singly-labeled C-13(1)-clenbuterol has been synthesized employing a straightforward pathway starting from easily available acetanilide. The critical step was the Friedel-Crafts acylation of this compound with marked acetyl chloride, being the first example of the use of this methodology applied to the synthesis of a clenbuterol derivative. Subsequent chemical reactions afforded the desired product with good yields. (C) 2011 Elsevier Ltd. All rights reserved.