The formation of amides through the in situactivation of carboxylicacids with [Et2NSF2]BF4 is presented. A wide range of carboxylicacids and amines were used to produce the corresponding amides in up to 99 % yield. The reaction of hindered amines was also possible in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) under slightly modified conditions. An enantiopure carboxylicacid and amine
Generation of Oxyphosphonium Ions by Photoredox/Cobaloxime Catalysis for Scalable Amide and Peptide Synthesis in Batch and Continuous‐Flow
作者:Junqi Su、Jia‐Nan Mo、Xiangyang Chen、Alexander Umanzor、Zheng Zhang、Kendall N. Houk、Jiannan Zhao
DOI:10.1002/anie.202112668
日期:2022.1.26
for the synthesis of amides and peptides is reported. Synergistic cooperation between a cobaloxime and a photoredox catalyst removes the elements of H2O through the use of PPh3 as a gentle organic reductant. The deoxygenative method is compatible with gram-scale peptide synthesis and applicable to peptide fragment condensation and SPPS, which may find applications in both organic synthesis and pharmaceutical
报道了一种用于合成酰胺和肽的光催化方法。钴肟和光氧化还原催化剂之间的协同作用通过使用 PPh 3作为温和的有机还原剂去除了 H 2 O 元素。脱氧方法与克级肽合成兼容,适用于肽片段缩合和SPPS,可在有机合成和药物生产中找到应用。
Heterobimetallic Lanthanide/Sodium Phenoxides: Efficient Catalysts for Amidation of Aldehydes with Amines
作者:Junmei Li、Fan Xu、Yong Zhang、Qi Shen
DOI:10.1021/jo802617d
日期:2009.3.20
Heterobimetalliclanthanide/sodium phenoxides were found to be efficientcatalysts for amidation of aldehydes with amines under mild conditions. The reactivity follows the order Nd < Y < Sm for metals and 2,6-(Me)2C6H3O < 2,6-(iPr)2C6H3O < 2,6-(tBu)2C6H3O for phenoxide groups. In comparison with the corresponding monometallic complexes, heterobimetallic complexes show higher activity and a wider range
发现杂双金属镧系/苯甲酸钠是在温和条件下醛与胺酰胺化的有效催化剂。对于金属和2,6-(Me)2 C 6 H 3 O <2,6-(i Pr)2 C 6 H 3 O <2,6-(t Bu),反应性遵循Nd