Synthesis of 3-(1,5-diphenyl-3-pyrazolyl)aryl propanoates
作者:William V. Murray、Susan K. Hadden、Michael P. Wachter
DOI:10.1002/jhet.5570270716
日期:1990.11
New procedures for the synthesis of 3-(1,5-diphenyl-3-pyrazolyl)arylpropanoates and related 2-(1,5-diphenyl-3-pyrazolyl)arylpropanoates from a common 3-hydroxymethylpyrazole intermediate are described. These new procedures include an improved method for carrying out pyridinium chlorochromate oxidations under ultrasonic conditions. These syntheses also utilize lithium triethylphosphonoacetate formed