Practical one-pot amidation of <i>N</i>-Alloc-, <i>N</i>-Boc-, and <i>N</i>-Cbz protected amines under mild conditions
作者:Wan Pyo Hong、Van Hieu Tran、Hee-Kwon Kim
DOI:10.1039/d1ra02242c
日期:——
A facile one-pot synthesis of amides from N-Alloc-, N-Boc-, and N-Cbz-protected amines has been described. The reactions involve the use of isocyanate intermediates, which are generated in situ in the presence of 2-chloropyridine and trifluoromethanesulfonyl anhydride, to react with Grignard reagents to produce the corresponding amides. Using this reaction protocol, a variety of N-Alloc-, N-Boc-, and
已经描述了由N - Alloc-、N - Boc- 和N -Cbz-保护的胺轻松一锅合成酰胺。该反应涉及使用在 2-氯吡啶和三氟甲磺酰酐存在下原位生成的异氰酸酯中间体与格氏试剂反应生成相应的酰胺。使用该反应方案,多种N - Alloc-、N - Boc- 和N -Cbz-保护的脂肪胺和芳基胺以高产率有效地转化为酰胺。该方法对酰胺的合成非常有效,并为简便的酰胺化提供了一种有前途的方法。