An efficient, rapid, and green synthesis of functionalized pyrazoles has been accomplished under solvent-freeconditions by the reaction of phenyl hydrazine, aldehydes and ethyl acetoacetate. This approach exploits the synthetic potential of microwave irradiation and scandium triflate combination and offers many advantages such as excellent product yields, shorter reaction time, easy isolation of products
Silica chloride catalyzed one-pot synthesis of fully substituted pyrazoles
作者:Dhanaji V. Jawale、Umesh R. Pratap、Jyotirling R. Mali、Ramrao A. Mane
DOI:10.1016/j.cclet.2011.05.016
日期:2011.7
Silica chloride catalysted one pot cyclocondensation of aldehydes, ethyl acetoacetate and phenyl hydrazine leading to substituted pyrazoles has been reported. (C) 2011 Ramrao A. Mane. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.