Organocatalyzed Friedel–Crafts arylation of benzylic alcohols
摘要:
Electron-rich aromatic and heteroaromatic rings are functionalized directly with a variety of benzylic alcohols under mild conditions. The reaction is catalyzed by commercially available pentafluorophenylboronic acid, which is stable under ambient conditions and recoverable. The reaction itself is highly atom economical and produces water as the only byproduct. A Friedel-Crafts mechanism is proposed. (C) 2010 Elsevier Ltd. All rights reserved.
Friedel-Crafts Alkylation with Carbenium Ions Generated by Electrochemical Oxidation of Stannylmethyl Ethers
作者:Anna Lielpetere、Aigars Jirgensons
DOI:10.1002/ejoc.202000568
日期:2020.8.9
Friedel–Crafts alkylation of electron rich arenes can be achieved by stabilized carbenium ions which are generated by single cell anodic oxidation of stannylmethyl ethers at low potential. The use of NaHCO3 as an additive ensures close‐to‐neutral conditions enabling the reaction with arenes bearing acid‐sensitive groups such as O‐TBS, O‐Tr, O‐MOM, O‐THP.
The Friedel-Crafts-type benzylation of various -excessive heteroaromatic and aromatic compounds with trityl or benzhydryl halides was efficiently promoted by a thiourea catalyst. This is a novel example of thiourea catalysis of aromatic alkylation by way of an S(N)1 pathway.
Furylcyclohexenones. 1. Synthesis and properties of 3- and 5-furyl-6-ethoxycarbonylcyclohexenones
作者:E. B. Usova、L. I. Lysenko、G. D. Krapivin、V. G. Kul'nevich
DOI:10.1007/bf01164783
日期:1996.5
Reaction of cyclic ?-ketoalcohols with trityl perchlorate
作者:E. B. Usova、G. D. Krapivin、L. I. Lysenko、V. G. Kul'nevich
DOI:10.1007/bf00532043
日期:1993.11
Organocatalyzed Friedel–Crafts arylation of benzylic alcohols
作者:J. Adam McCubbin、Oleg V. Krokhin
DOI:10.1016/j.tetlet.2010.02.151
日期:2010.5
Electron-rich aromatic and heteroaromatic rings are functionalized directly with a variety of benzylic alcohols under mild conditions. The reaction is catalyzed by commercially available pentafluorophenylboronic acid, which is stable under ambient conditions and recoverable. The reaction itself is highly atom economical and produces water as the only byproduct. A Friedel-Crafts mechanism is proposed. (C) 2010 Elsevier Ltd. All rights reserved.