Selective Synthesis of Pyrazol-3-yl- and Pyrazol-5-ylphosphonates
摘要
Abstract
An approach to selective synthesis of regioisomeric N-substituted pyrazolyl-3-yl- and pyrazol-5-ylphosphonates has been developed based on the reaction of aryl-substituted hydrazines with 3-oxoprop-1-yn-1-yl)phosphonates.