Synthesis of a Library of Fluorescent 2-Aryl-3-trifluoromethylnaphthofurans from Naphthols by Using a Sequential Pummerer-Annulation/Cross-Coupling Strategy and their Photophysical Properties
作者:Yuuya Ookubo、Atsushi Wakamiya、Hideki Yorimitsu、Atsuhiro Osuka
DOI:10.1002/chem.201201261
日期:2012.10.1
was the most efficient catalyst for the arylation step, which represents the first cross‐coupling of aryl sulfides by using an N‐heterocyclic‐carbene‐ligated palladium complex. This library consists of new π‐expanded molecules, all of which are fluorescent in the solid state as well as in solution. Their photophysical properties, such as absorption and emission, fluorescence quantum yields, and fluorescence
从简单的萘酚中高效合成了2-芳基-3-三氟甲基萘呋喃文库。在该合成中,萘酚与3-(2,2,2-三氟亚乙基)-2-,4-二硫杂戊烷2-氧化物的Pummerer型环化后,将所得的2-甲硫基-3-三氟甲基萘呋喃与各种芳基锌试剂。钯配合物Pd-PEPPSI-IPr是芳基化步骤中最有效的催化剂,代表了使用N-杂环-卡宾连接的钯配合物实现的芳基硫醚的首次交叉偶联。该文库由新的π扩展分子组成,所有这些分子在固态和溶液中均发出荧光。对其吸收和发射,荧光量子产率和荧光寿命等光物理性质进行了彻底的研究。