作者:Pei-Pei Yeh、David S. B. Daniels、David B. Cordes、Alexandra M. Z. Slawin、Andrew D. Smith
DOI:10.1021/ol403697h
日期:2014.2.7
A one-pot isothiourea-mediated Michael addition/lactonization/thiol elimination cascade sequence for the formation of 4,6-disubstituted and 3,4,6-trisubstituted 2-pyrones from (phenylthio)acetic acids and α,β-unsaturated trifluoromethyl ketones is described. The synthesis of a COX-2 inhibitor and the wide-ranging derivatization of the 2-pyrone moiety to trifluoromethyl substituted aromatics and heteroaromatics
一锅异硫脲介导的迈克尔加成/内酯化/巯基消除级联序列,用于由(苯硫基)乙酸和α,β-不饱和三氟甲基酮形成4,6-二取代和3,4,6-三取代2-吡喃酮描述。还公开了COX-2抑制剂的合成以及2-吡喃酮部分广泛衍生为三氟甲基取代的芳族化合物和杂芳族化合物。