Aerobic Amide Bond Formation with
<i>N</i>
‐hydroxysuccinimide
作者:Haoyi Yao、Kana Yamamoto
DOI:10.1002/asia.201200017
日期:2012.7
Breathe easy: Molecular oxygen is one of the most abundant, atom‐efficient, and economical oxidants. An aerobic oxidative amideformation from aldehydes and amines is reported. The method uses a catalytic amount of Co(OAc)2 and N‐hydroxysuccinimide as reaction promoters. It is applicable to chiral substrates without loss of their optical purity.
Snipping tool: Zn(OTf)2 is an efficient catalyst for selective cleavage of amides bearing a β‐hydroxyethyl group on the nitrogen atom. The mechanism involves an N,O‐acyl rearrangement and transesterification. This new catalytic system can be applied to sequence‐specific peptide bond scission at the amine side of a serine residue. Tf=trifluoromethanesulfonyl.