Synthesis of substituted pyridines and pyridazines via ring closing metathesis
作者:Timothy J. Donohoe、Lisa P. Fishlock、José A. Basutto、John F. Bower、Panayiotis A. Procopiou、Amber L. Thompson
DOI:10.1039/b904363b
日期:——
RCM can be used to make aromatic heterocycles, namely pyridines and, for the first time, pyridazines; the key step after RCM involves elimination of sulfinate to provide the aromatic system.
作者:Ralph Paczkowski、Cäcilia Maichle-Mössmer、Martin E. Maier
DOI:10.1021/ol006742e
日期:2000.12.1
[structure] A formal total synthesis of the natural product dysidiolide is described. Starting from a Diels-Alder reaction between an enoate and a Rawal diene, the cyclohexenone 4 was synthesized. A subsequent stereospecific methyl cuprate addition established the desired trans configuration in the cyclohexane 3. Wacker oxidation of the pentenyl side chain to the diketone 17 followed by an intramolecular