7231-34-7Relevant academic research and scientific papers
MIGRATION TENDENCIES OF FUNCTIONAL GROUPS TOWARD SIGMATROPIC REARRANGEMENT IN 3,3-DISUBSTITUTED 3H-PYRAZOLES
Schiess, Peter,Stalder, Henri
, p. 1417 - 1420 (2007/10/02)
3,3-Disubstituted 3H-pyrazoles la - e aromatise through an intramolecular sigmatropic 1,5-(1,2-)shift of one of the quaternary groups.From a kinetic study of the uncatalysed and of the acid catalysed isomerisation reaction migration tendencies of functional groups in sigmatropic rearrangement toward neutral and toward cationic centers are obtained.
