Palladium-catalysed cross-coupling as a key step in the synthesis of pyridyl-benzamides, -benzylamines and -sulfonamides
作者:Charles R.K. Changunda、Adriaan E. Basson、Sandy F. van Vuuren、Amanda L. Rousseau、Moira L. Bode
DOI:10.1016/j.tet.2016.11.071
日期:2017.1
Novel N-, O- and S-substituted pyridyl-benzamides, -benzylamines and -sulfonamides were prepared by means of palladium-catalysed cross-coupling reactions. The synthetic approach, using Pd2(dba)3 as palladium source and rac-BINAP as supporting ligand, proved to be successful for CN, CO and CS cross-coupling reactions. One of the substrates underwent an unexpected nucleophilic aromatic substitution of
通过钯催化的交叉偶联反应,制备了新颖的N-,O-和S-取代的吡啶基-苯甲酰胺,-苄胺和-磺酰胺。以Pd 2(dba)3为钯源和rac -BINAP为支持配体的合成方法被证明对C N,C O和C S交叉偶联反应是成功的。底物之一经历了氟的意想不到的亲核芳族取代,而不是预期的C N交叉偶联反应。