A Novel One-Pot Synthesis of Different Derivatives of Tetraarylterephthalaldehyde via a Multiple Aryne Sequence
作者:Fatemeh Jabbari、Akbar Saednya
DOI:10.1055/s-0029-1218593
日期:2010.2
a novel series of tetraarylterephthalaldehyde derivatives in an one-pot reaction is described. In this methodology 1,2,4,5-tetrachloro-3,6-diiodobenzene is treated with various aryl Grignard reagents (excess) in tetrahydrofuran to give tetraarylbenzene-1,4-diylbis(magnesium bromides). After reaction of this product with ethyl formate and aqueous quench, tetraarylterephthalaldehydes are isolated in
描述了一锅反应中一系列新的四芳基对苯二甲醛衍生物的合成。在这种方法中,将1,2,4,5-四氯-3,6-二碘代苯用各种芳基格氏试剂(过量)在四氢呋喃中处理,得到四芳基苯-1,4-二基双(溴化镁)。该产物与甲酸乙酯和水淬灭反应后,分离出四芳基对苯二醛,收率为33-80%。提出了一种涉及有机金属芳烃中间体的机理。 四芳基对苯二甲醛-1,2,4,5-四氯-3,6-二碘苯-芳基格氏试剂-四芳基苯-1,4-二基双(溴化镁)-甲酸乙酯