Thermal Rearrangement of N -Substituted Pyrazoles to 4,4'-Dipyrazolylmethane and 1,1,2-(4,4',4''-Tripyrazolyl)ethane
Nial J. Wheate, John A. Broomhead, J. Grant Collins and
Anthony I. Day
Australian Journal of Chemistry
54(2) 141 - 144
Published: 2001
Abstract
A mechanistic explanation is given for the thermal rearrangement of 1,1′-dipyrazolylmethane to 4,4′-dipyrazolylmethane (dpzm). This mechanism can, in part, be used to explain the formation of 1,1,2-(4,4′,4″-tripyrazolyl) ethane (tpze) from pyrazole and trichloroethanol. An improved synthesis for dpzm and the synthesis of tpze, a new pyrazole derivative, is presented.Manuscript received 27 November 2000.
https://doi.org/10.1071/CH00151
© CSIRO 2001
