Facile One-Pot Synthesis of Monosubstituted 1-Aryl-1H-1,2,3-triazoles from Arylboronic Acids and Prop-2-ynoic Acid (=Propiolic Acid) or Calcium Acetylide (=Calcium Carbide) as Acetylene Source
作者:Qing Yang、Yubo Jiang、Chunxiang Kuang
DOI:10.1002/hlca.201100256
日期:2012.3
monosubstituted 1‐aryl‐1H‐1,2,3‐triazoles was achieved in a one‐pot reaction from arylboronic acids and prop‐2‐ynoic acid or calcium acetylide (=calcium carbide), respectively, as a source of acetylene, with yields ranging from moderate to excellent (Scheme 1, Table 2). The reaction conditions were successfully applied to arylboronic acids, including analogs with various functionalities. Unexpectedly
单取代的1-芳基-1 H 1,2,3-三唑的合成是通过一锅法反应分别由芳基硼酸和prop-2-壬酸或乙炔化钙(=碳化钙)作为来源乙炔,收率从中等到优异(方案1,表2)。反应条件已成功应用于芳基硼酸,包括具有各种功能的类似物。出乎意料的是,1,2,3-三唑部分促进了区域选择性加氢脱溴(方案2)。