step-economical protocol is that the carboxylic acid functionality was employed as both a traceless directing group for the N-H activation/arylation and a functional handle for the tandem π-extended decarboxylative annulation.
在Pd(II)催化下,以易得的
2-氨基苯甲酸和环状高价二芳基
碘鎓试剂为起始原料,可以有效地制备各种官能化的三苯并[b,d,f] pine子。这种经济实惠的步骤的关键在于,
羧酸官能团既用作NH活化/芳基化的无痕导向基团,又用作串联π扩展的脱羧环化的官能团。