Potassium tert-Butoxide Facilitated Amination of Carboxylic Acids with N,N-Dimethylformamide
作者:Jing Zhang、Yuanjing Huang
DOI:10.1055/a-1817-1965
日期:2022.8
Herein a practical and efficient potassium tert-butoxide (KO t Bu)-facilitated amination of carboxylic acids with N,N-dimethylamine is described. In the presence of catalytic amount of KO t Bu, a variety of aliphatic and aromatic carboxylic acids are transformed to N,N-dimethylamides using DMF as the dimethylamine reagent with the assistance of trimethylacetic anhydride. The applicability of this protocol
本文描述了一种实用且有效的叔丁醇钾 (KO t Bu)-促进羧酸与N , N-二甲胺的胺化。在催化量的 KO t Bu 存在下,在三甲基乙酸酐的帮助下,使用 DMF 作为二甲胺试剂,多种脂肪族和芳香族羧酸转化为N,N-二甲基酰胺。该协议的适用性通过复杂药物分子的后期二甲基酰胺化得到证明。涉及 KO t的似是而非的反应机制 在机理研究的基础上,提出了由甲酰胺分解和酸酐介导的缩合促进 Bu 促进的原位胺生成。
Phosphonic acid analogs of diclofenac: an Arbuzov reaction of trimethylphosphite with an ortho-quinonoid intermediate
作者:Ben Mugrage、Clive Diefenbacher、Joe Somers、David T Parker、Tonia Parker
DOI:10.1016/s0040-4039(00)00111-8
日期:2000.3
The phosphonic acid analog of the NSAID Diclofenac was efficiently synthesized via an Arbuzovreaction between 2-(2,6-dichloroanilino)benzyl alcohol and trimethyl phosphite followed by TMSBr promoted dealkylation. Seven related phosphonic acids were synthesized using the same novel acid-catalyzed Arbuzovreaction as the key step.