Synthesis of 3,5-diaryl-4-chlorophthalates by [4+2] cycloaddition of 1-ethoxy-2-chloro-1,3-bis(trimethylsilyloxy)-1,3-diene with dimethyl acetylenedicarboxylate and subsequent site-selective Suzuki–Miyaura reactions
作者:Obaid-Ur-Rahman Abid、Muhammad Farooq Ibad、Muhammad Nawaz、Muhammad Adeel、Nasim Hasan Rama、Alexander Villinger、Peter Langer
DOI:10.1016/j.tetlet.2009.11.088
日期:2010.1
The [4+2] cycloaddition of 1-ethoxy-2-chloro-1,3-bis(trimethylsilyloxy)-1,3-diene with dimethyl acetylenedicarboxylate (DMAD) afforded dimethyl 4-chloro-3,5-dihydroxyphthalate. Site-selective Suzuki–Miyaura reactions of its bis(triflate) provide a convenient approach to 3,5-diaryl-4-chlorophthalates containing two different aryl groups.
1-乙氧基-2-氯-1,3-双(三甲基甲硅烷基氧基)-1,3-二烯与乙炔基二羧酸二甲酯(DMAD)的[4 + 2]环加成反应得到4-氯-3,5-二羟基邻苯二甲酸二甲酯。双(三氟甲磺酸酯)的位置选择性Suzuki-Miyaura反应为含有两个不同芳基的3,5-二芳基-4-氯邻苯二甲酸酯提供了一种简便的方法。