2<i>H</i>-Chromenes Generated by an Iron(III) Complex-Catalyzed Allylic Cyclization
作者:L. Calmus、A. Corbu、J. Cossy
DOI:10.1002/adsc.201500058
日期:2015.5.4
A straightforward method based on an iron(III) complex‐catalyzed cyclization of 2‐(1‐hydroxyallyl)phenols is reported to access a large variety of 2H‐chromenes. This method was applied to the total synthesis of a natural product, tephrowatsin B.
Benzotriazolium Salts: Emergent Readily Accessible Bench-Stable Lewis Acid Catalysts
作者:Tobias Danelzik、Sumi Joseph、Christian Mück-Lichtenfeld、Constantin G. Daniliuc、Olga García Mancheño
DOI:10.1021/acs.orglett.2c01697
日期:2022.8.26
benzotriazolium salts have been introduced as efficient, readily accessible, bench-stable Lewisacid catalysts. Though these sorts of N-heterocyclic compounds have found wide applications as ionic liquids or electrolytes, their Lewisacid catalytic activity remained unexplored. Herein, their potential as Lewisacid catalysts was demonstrated in two prototypical allylic and Nazarov cyclization reactions, showing
A catalytic approach for the synthesis of allylic azides from aryl vinyl carbinols
作者:G. Srinu、P. Srihari
DOI:10.1016/j.tetlet.2013.02.094
日期:2013.5
A metal-free and catalytic approach for the preparation of allylic azides starting from aryl vinyl carbinols is described herein. (C) 2013 Elsevier Ltd. All rights reserved.