作者:Vanessa Prieur、Jaime Rubio-Martínez、Mercè Font-Bardia、Gérald Guillaumet、M. Dolors Pujol
DOI:10.1002/ejoc.201301496
日期:2014.3
A new synthetic route to triaryl pyrrolo[2,3-d]pyrimidines from common 4,6-dichloropyrimidine has been developed. The triarylated compounds are synthesized by three cross-coupling reactions using three different catalysts. The introduction of a C-6 aryl group was achieved in a two-step process under Sonogashira conditions [Pd(dba)2/CuI] followed by intramolecular cyclization, and application of Suzuki–Miyaura
已开发出一条从常见的 4,6-二氯嘧啶合成三芳基吡咯并 [2,3-d] 嘧啶的新路线。三芳基化合物通过使用三种不同催化剂的三种交叉偶联反应合成。在 Sonogashira 条件 [Pd(dba)2/CuI] 下通过两步法引入 C-6 芳基,然后进行分子内环化,并应用 Suzuki-Miyaura 条件 [Pd(PPh3)4; PdCl2(PPh3)2] 导致 C-4 和 C-5 二芳基化。该序列允许灵活地合成含有不同芳基的高度芳基化的吡咯并嘧啶。