Synthesis of thiazole derivatives bearing an incorporated Z-5-aminopent-3-enoic acid fragment
作者:Alexander G. Zavozin、Nikolai V. Ignat'ev、Michael Schulte、Sergei G. Zlotin
DOI:10.1016/j.tet.2013.06.060
日期:2013.8
Novel compounds bearing a joint thiazole and a Z-5-aminopent-3-enoic acid fragments have been synthesized from readily accessible 5-bromolevulinic esters through a sequence of nucleophilic substitution, bromination, Hantzsch-type heterocyclization and Gabriel-like deprotection reactions. A majority of these reactions proceed in ionic liquid media that enhances their efficiency and selectivity in comparison