Synthesis of cyanoformamides from primary amines and carbon dioxide under mild conditions. Synthesis of ceratinamine
作者:Eduardo García-Egido、Jairo Paz、Beatriz Iglesias、Luis Muñoz
DOI:10.1039/b912043b
日期:——
Treatment of primary amines with tetramethylphenylguanidine (PhTMG) and a cyanophosphonate at −10 °C under an atmosphere of carbon dioxide provides cyanoformamides in very high to excellent yields. The reaction proceeds efficiently within a short time. By-products were not detected in most runs and epimerization was not found when optically pure α-aminoesters were used as substrates. As an example, the reaction was applied to the synthesis of the marine natural product ceratinamine.
在−10 °C的二氧化碳气氛下,采用四甲基苯基氨基脲(PhTMG)和氰基磷酸酯对一类胺进行处理,能够获得氰甲酰胺,产率非常高到优秀。该反应在短时间内高效进行。在大多数实验中未检测到副产物,且在使用光学纯的α-氨基酯作为底物时未发现表异构化。作为一个例子,该反应被应用于合成海洋天然产物ceratinamine。