Synthesis of new 4-phosphorylated derivatives of 5-amino-1,3-oxazole
摘要:
The N-1,1,1,2-Tetrachloroethylamides were found to react with diethyl amidophosphites via the Arbuzov reaction to afford N-substituted amides of ethyl 1-acylamino-2,2,2-trichloroethylphosphonic acids. A convenient method for the synthesis of new 4-phosphorylated 5-amino-1,3-oxazoles on their basis was developed.
Abstract A series of new class of diethyl N-2-hydroxyethyl-N'-substituted phosphoramidimidates 6(a–e) and diethyl P-morpholino-N-substituted phosphonimidates 6(f–j) was synthesized. The precursor intermediates, diethyl substituted phosphoramidites 3(a–b) were prepared initially by a reaction of various amines 1(a–b) and diethyl phosphorochloridite (2) and then they were treated by in situ with aromatic/alkyl
Visible-light-induced coupling of carboxylic acids with alcohols/amines via a phosphorous linchpin strategy
作者:Qiupeng Peng、Achyut Ranjan Gogoi、Ángel Rentería-Gómez、Osvaldo Gutierrez、Karl A. Scheidt
DOI:10.1016/j.chempr.2023.04.011
日期:2023.7
organic chemistry and has been well developed over the past century. These dehydrations are extensively used in medicinal chemistry and natural product synthesis due to the prevalence of these functional groups in bioactive molecules. Here, we report a divergent process from the expected ester/amide outcomes through a light-induced coupling of activated carboxylic acids and alcohols/amines to efficiently