Synthesis of Vicinal Quaternary All-Carbon Centers via Acid-catalyzed Cycloisomerization of Neopentylic Epoxides
作者:Matthias Schmid、Kevin R. Sokol、Lukas A. Wein、Sofia Torres Venegas、Christina Meisenbichler、Klaus Wurst、Maren Podewitz、Thomas Magauer
DOI:10.1021/acs.orglett.0c02296
日期:2020.8.21
Termination of the sequence occurs via Friedel–Crafts-type alkylation of the remote (hetero)arene linker. The transformation is efficiently promoted by sulfuric acid and proceeds best in 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) as the solvent. Variation of the substitution pattern provided detailed insights into the migration tendencies and revealed a competing disproportionation pathway of dihydronaphthalenes
我们报告了我们对 2,2-二取代的新戊基环氧化物的催化环异构化反应的研究,以生产高度取代的四氢萘和色满。序列的终止通过远程(杂)芳烃接头的 Friedel-Crafts 型烷基化发生。硫酸可有效促进转化,并在 1,1,1,3,3,3-六氟异丙醇 (HFIP) 作为溶剂中进行得最好。取代模式的变化提供了对迁移趋势的详细见解,并揭示了二氢萘的竞争歧化途径。