A Convenient Synthesis of Amino Acid Arylamides Utilizing Methanesulfonyl Chloride and N-Methylimidazole
Liguang Mao, Zhenyu Wang, Yongjia Li, Xiqian Han, Weicheng Zhou*
*State Key Lab of New Drug & Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, 1111 Zhongshanbeiyi Road, Shanghai 200437, P. R. of China, Email: zhouwcsipi.com.cn
L. Mao, Z. Wang, Y. Li, X. Han, W. Zhou, Synlett, 2011, 129-133.
N-Cbz-protected amino acids reacted with various aryl amines in the presence of methanesulfonyl chloride and N-methylimidazole in dichloromethane to give the corresponding arylamides in high yields without racemization under these mild conditions.
see article for more examples