作者:P. Veeraraghavan Ramachandran、Henry J. Hamann、Shivani Choudhary
DOI:10.1021/acs.orglett.0c03184
日期:2020.11.6
Amine-boranes serve as dual-purpose reagents for direct amidation, activating aliphatic and aromatic carboxylic acids and, subsequently, delivering amines to provide the corresponding amides in up to 99% yields. Delivery of gaseous or low-boiling amines as their borane complexes provides a major advantage over existing methodologies. Utilizing amine-boranes containing borane incompatible functionalities
胺-硼烷用作直接酰胺化的两用试剂,可活化脂肪族和芳香族羧酸,随后以高达99%的收率递送胺以提供相应的酰胺。气态或低沸点胺作为硼烷络合物的输送提供了优于现有方法的主要优势。利用含有硼烷不相容官能团的胺-硼烷可以制备官能化的酰胺。提出了通过三酰氧基硼烷-胺络合物的分子间机制。