Preparation of Sulfamates and Sulfamides Using a Selective Sulfamoylation Agent
作者:Hai-Ming Wang、Chao-Dong Xiong、Xiao-Qu Chen、Chun Hu、Dong-Yu Wang
DOI:10.1021/acs.orglett.1c00504
日期:2021.4.2
Sulfamates and sulfamides are prevalent in biological molecules, but their universal synthetic methods are limited. We herein report a sulfamoylation agent with high solubility and shelf stability. Various sulfamates and sulfamides can be synthesized directly from alcohols or amines by employing this agent with high selectivity and high yields. This protocol was also successfully used for late-stage
GRAPHICAL ABSTRACT ABSTRACT An efficient protocol was developed for the synthesis of N-sulfonylimines under environment friendly conditions. Ultrasonic energy was employed to obtain the desired products in excellent yields with high purity under solvent- and catalyst-free conditions. The synthesis of new N-sulfonylimines was accomplished from various N-sulfonamides and benzaldehyde. The structures
图形摘要 摘要 开发了一种在环境友好条件下合成 N-磺酰亚胺的有效方案。在无溶剂和无催化剂的条件下,采用超声波能以高产率和高纯度获得所需产品。新的N-磺酰亚胺的合成是由各种N-磺酰胺和苯甲醛完成的。合成化合物的结构通过元素分析以及 1H、13C NMR 光谱数据、IR 和 MS 确认。
A simple, rapid, and efficient N-Boc protection of amines under ultrasound irradiation and catalyst-free conditions
A green and simple approach for the N-Boc protection on structurally diverse amines under ultrasound irradiation is described. Selective N-Boc protection was achieved in excellent isolated yield in a short reaction time at room temperature. Mild conditions, inexpensive and an easily available reagent, and absence of any auxiliary substances are the main advantages of this procedure.
Groutas William C., Kuang Rongze, Venkataraman Radhika, Biochem. and Biophys. Res. Commun, 198 (1994) N 1, S 341-349
作者:Groutas William C., Kuang Rongze, Venkataraman Radhika