Microwave-Assisted [3+2] Cycloaddition and Suzuki-Miyaura Cross-Coupling for a Concise Access to Polyaromatic Scaffolds
作者:Damien Hédou、Emmanuel Deau、Carole Dubouilh-Benard、Morgane Sanselme、Anthony Martinet、Elizabeth Chosson、Vincent Levacher、Thierry Besson
DOI:10.1002/ejoc.201301014
日期:2013.11
3H)-one derivs. were prepd. in a high-yielding microwave-assisted one-pot procedure. The one-pot sequence was conveniently extended to the synthesis of com. unavailable 6-bromo-N3-(propargyl)pyrido[2,3-d]pyrimidinone by a regioselective bromination with N-bromosuccinimide (NBS). The synthesis of the target compds. was achieved using 2-aminobenzoic acid and 2-amino-3-pyridinecarboxylic acid as starting
新型 3-(2-propynyl)pyrido[2,3-d]pyrimidin-4(3H)-one 衍生物。和 3-(2-propynyl)quinazolin-4(3H)-one 衍生物。准备好了。在高产微波辅助一锅程序中。一锅法方便地扩展到 com 的合成。通过与 N-溴代琥珀酰亚胺 (NBS) 的区域选择性溴化,无法获得 6-溴-N3-(炔丙基) 吡啶并[2,3-d] 嘧啶酮。目标化合物的合成。使用 2-氨基苯甲酸和 2-氨基-3-吡啶甲酸作为起始原料来实现。合成支架通过铜 (I) 催化的 [3+2] 环加成成功转化为三唑。并在 6 位被 Suzuki-Miyaura 交叉偶联以高总产率取代。