Total synthesis of alboatrin, a phytotoxic metabolite from Verticillium alboatrum
摘要:
A synthesis of the phytotoxic metabolite alboatrin 1 is described. An intramolecular ketene-olefin cycloaddition followed by an oxidative ring enlargement was employed to generate the tricyclic ring system. (c) 2008 Elsevier Ltd. All rights reserved.
Enantioselective Vanadium-Catalyzed Oxidative Coupling: Development and Mechanistic Insights
作者:Houng Kang、Madison R. Herling、Kyle A. Niederer、Young Eun Lee、Peddiahgari Vasu Govardhana Reddy、Sangeeta Dey、Scott E. Allen、Paul Sung、Kirsten Hewitt、Carilyn Torruellas、Gina J. Kim、Marisa C. Kozlowski
DOI:10.1021/acs.joc.8b02083
日期:2018.12.7
vanadium catalyst for enantioselectiveoxidativecoupling of phenols is reported, ultimately resulting in a simple monomeric vanadium species combined with a Brønsted or Lewis acid additive. The resultant vanadium complex is found to effect the asymmetric oxidative ortho–ortho coupling of simple phenols and 2-hydroxycarbazoles with good to excellent levels of enantioselectivity. Experimental and quantum