Three-Component Synthesis and 1,3-Dipolar Cycloaddition of Highly Functionalized Pyrans with Nitrile Oxides: Easy Access to 1,2,4-Oxadiazoles
作者:Raju Suresh Kumar、Alagar Ramar、Subbu Perumal、Abdulrahman I. Almansour、Natarajan Arumugam、Mohamed Ashraf Ali
DOI:10.1080/00397911.2012.740647
日期:2013.10.18
Abstract Three-component reaction of 1-[(4-chlorophenyl)sulfanyl]acetone, malononitrile, and substituted aromatic aldehydes in the presence of sodium ethoxide under simple mixing at ambient temperature for 5–8 min afforded highly functionalized 4H-pyrans in good to excellent yields. 1,3-Dipolar cycloaddition of nitrile oxides over the nitrile functionality of the 4H-pyrans furnished 1,2,4-oxadiazoles
摘要 1-[(4-氯苯基)硫烷基]丙酮、丙二腈和取代的芳香醛在乙醇钠的存在下,在室温下简单混合5-8分钟,得到高度官能化的4H-吡喃。优良的产量。腈氧化物在 4H-吡喃的腈官能团上的 1,3-偶极环加成以中等产率提供 1,2,4-恶二唑。补充材料可用于本文。访问出版商的 Synthetic Communications® 在线版,了解完整的实验和光谱细节。图形概要