Methyltrioxorhenium/urea hydrogen peroxide catalyzed oxidation of N-sulfinyl imines: A mild and highly efficient access to N-sulfonyl aldimines, ketimines and α-ketiminoesters
作者:Yu Tan、Ru-Lin Ma、Hua Lin、Xing-Wen Sun
DOI:10.1016/j.tetlet.2020.152587
日期:2020.12
A mild and highly efficient access to N-sulfonyl imines through the oxidation of corresponding N-tert-butylsulfinyl imines and N-p-tosyl-sulfinyl imines with UHP in the presence of catalytic amount MTO was developed. Under mild reaction conditions, this highly selective reaction, provides a general and efficient access to N-sulfonyl aldimines, ketimines and α-ketiminoesters in excellent yield. The
温和高效访问Ñ通过相应的氧化磺酰亚胺ñ -叔丁基亚亚胺和ñ - p甲苯磺酰基亚磺酰亚胺与UHP在催化量MTO的存在下显影。在温和的反应条件下,这种高度选择性的反应可以以优异的收率普遍有效地获得N-磺酰基醛亚胺,酮亚胺和α-酮亚氨基酸酯。可以提供高纯度的不稳定的磺酰亚胺中间体,无需进一步纯化即可用于随后的反应。通过简便地合成四元α证明了该方法的应用。-通过获得的α-酮亚氨基酸酯的烯丙基化生成-氨基酸衍生物。