Synthesis of phenyl furyl sulfides and phenyl furyl ethers by nucleophilic substitution of nitrofurans
作者:Masayuki Ogawa、Katsuya Sakuma、Hiroshi Okamoto、Jyunichi Koyanagi、Kouji Nakayama、Akira Tanaka、Katsumi Yamamoto
DOI:10.1002/jhet.5570440527
日期:2007.9
Phenyl furyl sulfides (3a-j) and phenyl furyl ethers (3k-n), which are useful in synthesizing furocondensed 3-ring compounds, can be synthesized by nucleophilic substitution of nitrofurans having electron withdrawal groups. In our experiments using 5-nitrofurans having electron withdrawal groups (2a-i), nucleophilic substitution readily occurred with the benzenethiolate anion of thiosalicylic acid
可以通过亲核取代具有电子撤离基团的硝基呋喃来合成用于合成呋喃缩合的3-环化合物的苯基呋喃基硫化物(3a-j)和苯基呋喃基醚(3k-n)。在我们使用具有电子撤离基团(2a-i)的5-硝基呋喃的实验中,亲核取代容易发生在硫代水杨酸的苯硫醇根阴离子(1a),硫代水杨酸酯的苯硫醇根阴离子(1b)和水杨酸酯的苯甲酸根阴离子(1c-d)得到苯基呋喃基硫醚(3a-j)和苯基呋喃基醚(3k-n)。