作者:Mitsuaki Watanabe、Mutsuhiro Date、Kenji Kawanishi、Ryuji Akiyoshi、Sunao Furukawa
DOI:10.1002/jhet.5570280130
日期:1991.1
Lithiation of S-(2-methylphenyl) N,N,N',N'-tetramethylphosphorodiamidothioate with sec-BuLi at -105° gave the corresponding benzylic anion which was acylated with various aromatic esters to give various deoxybenzoin derivatives in moderate to high yields. Acidic treatment of these products in refluxing formic acid gave 2-arylbenzo[b]thiophene derivatives. 2-Methylbenzo[b]thiophene and benzo[b]thiophen-2(3H)-one
S-(2-甲基苯基)N,N,N',N'-四甲基磷酸二酰胺基硫代硫酸盐与仲丁基锂在-105°锂化得到相应的苄基阴离子,该苄基阴离子被各种芳族酯酰化,以中等至高收率得到各种脱氧安息香衍生物。在回流甲酸中对这些产物进行酸性处理,得到了2-芳基苯并[ b ]噻吩衍生物。2-甲基苯并[ b ]噻吩和苯并[ b ]噻吩-2-(3- ħ也使用类似的方法制备) -酮。