5-氨基-1-苯基吡唑 、 2-溴丙二醛 在
氮气 、 silica gel 、 二氯甲烷 作用下,
以
溶剂黄146 为溶剂,
反应 5.0h,
以to obtain 740 mg (28%) of the title compound as an off-white solid的产率得到5-bromo-1-phenyl-1H-pyrazolo[3,4-b]pyridine
Rhodium-Catalyzed sp<sup>2</sup> C–H Acetoxylation of <i>N</i>-Aryl Azaindoles/<i>N</i>-Heteroaryl Indolines
作者:Aniket Mishra、Tripta Kumari Vats、Mahesh P. Nair、Arindam Das、Indubhusan Deb
DOI:10.1021/acs.joc.7b02203
日期:2017.12.1
A silver- and copper-free rhodium-catalyzed C–H acetoxylation reaction of azaindoles has been achieved at near ambient temperature employing PIDA as a nonmetallic acetoxy source. The method is highly selective, efficient, and scalable and requires acetic anhydride as the sole additive. The scope of the reaction has been successfully tested with a wide array of medicinally important heterocyclic scaffolds