Stereospecific Synthesis of Unprotected, α,β-Disubstituted Tryptamines and Phenethylamines from 1,2-Disubstituted Alkenes via a One-Pot Reaction Sequence
作者:Duc Chu、Jonathan A. Ellman
DOI:10.1021/acs.orglett.3c01021
日期:2023.5.26
phenethylamines are obtained by a one-pot, metal-free sequence that proceeds by the in situ formation of aziridinium salts followed by Friedel–Crafts reaction with electron-rich (hetero)arenes. Both steps are facilitated by hexafluoroisopropanol as the solvent. The one-pot sequence was effective for diversely substituted indoles and 1,3,5-trimethoxybenzene, for cyclic and acyclic alkenes, and proceeded in a stereospecific
无保护的 α,β-二取代色胺和苯乙胺是通过一锅、无金属序列获得的,该序列通过原位形成氮丙啶鎓盐,然后与富电子(杂)芳烃进行弗里德尔-克来福特反应。这两个步骤均通过六氟异丙醇作为溶剂来促进。一锅法序列对于不同取代的吲哚和 1,3,5-三甲氧基苯、环状和无环烯烃均有效,并且对于 ( E )-和 ( Z )-1,2-二取代烯烃均以立体定向方式进行。此外,将吗啉一锅法添加到氮丙啶鎓盐中提供了二胺。