Sulfated polyborate: A dual catalyst for the reductive amination of aldehydes and ketones by NaBH4
作者:Prerna Ganwir、Ganesh Chaturbhuj
DOI:10.1016/j.tetlet.2021.153143
日期:2021.6
An efficient, quick, and environment-friendly one-pot reductiveamination of aldehydes or ketones was developed. In ethanol at 70 °C, a imination catalyzed by sulfated polyborate and further reduced by sodium borohydride yields various amines. The present method has many significant benefits, including a shorter reaction time, excellent yields, and a hassle-free, straightforward experimental process
开发了一种高效、快速、环保的醛或酮的单锅还原胺化反应。在 70 °C 的乙醇中,由硫酸化多硼酸盐催化并由硼氢化钠进一步还原生成各种胺。本方法具有许多显着的好处,包括更短的反应时间、优异的产率和轻松、直接的实验过程。由于其灵活性,该反应具有广泛的应用,包括用于还原胺化的仲胺。
5-Amido- and 5-Amino-Substituted Epoxyisoindolo[2,1-<i>a</i>]tetrahydroquinolines and 10-Carboxylic Acids: Their Synthesis and Reactivity
作者:Vladimir P. Zaytsev、Fedor I. Zubkov、Flavien A. A. Toze、Daria N. Orlova、Maria N. Eliseeva、Dmitry G. Grudinin、Eugeniya V. Nikitina、Alexey V. Varlamov
DOI:10.1002/jhet.1024
日期:2013.2
was shown that the initial N-acylation of the tetrahydroquinolines was followed by a spontaneous [4+2]-cycloaddition of an N-acryloyl substituent to the furan ring. It was established that the intramolecular Diels–Alder reaction of furans is reversible, occurs stereoselectively as exo-addition, and led to target epoxyisoindolo[2,1-a]tetrahydroquinolines with moderate yields. Oxidation and aromatization