Microwave-assisted synthesis of 2-pyridinylethyl indazoles
摘要:
An atom-economic pathway to obtain N-alkyl indazoles bearing pyridine from indazoles and vinylpyridines in water is reported. Assisted with microwave irradiation, the reaction could be completed within 20 min, affording N1 or N2 alkylation indazoles in high yields. 4-Vinylpyridine gave N1 alkylated products exclusively. (C) 2015 Elsevier Ltd. All rights reserved.