Synthesis of 2-acyl-1-naphthols by gold-catalyzed oxidative cyclization of 2-alkenylphenyl alkynyl ketones
摘要:
The gold(I)-catalyzed oxidative cyclization of 2-alkenylphenyl alkynyl ketones employing organic oxides as oxidants has been developed. This reaction involves aromatization to furnish 2-acyl-1-naphthols. Also, 10-acyl-9-phenanthrenols are analogously produced from the reaction of allcynyl 2-biphenyl ketones. (C) 2014 Elsevier Ltd. All rights reserved.
Abstract Hydroxynaphthyl ketones were obtained with high yields under very mild conditions in the presence of AlCl3 via Friedel–Crafts acylation and demethylation from naphthyl ethers. Several Lewis acids were tested, and AlCl3 was the most efficient catalyst.
Dearomative Cascade Photocatalysis: Divergent Synthesis through Catalyst Selective Energy Transfer
作者:Michael J. James、Jonas Luca Schwarz、Felix Strieth-Kalthoff、Birgit Wibbeling、Frank Glorius
DOI:10.1021/jacs.8b03302
日期:2018.7.18
The discovery and application of dearomative cascade photocatalysis as a strategy in complex molecule synthesis is described. Visible-light-absorbing photosensitizers were used to (sequentially) activate a 1-naphthol derived arene precursor to divergently form two different polycyclic molecular scaffolds through catalyst selective energy transfer.