O-ALKYLATION OF 3-HYDROXY-1-PHENYL-2-PYRAZOLIN-5-ONE

摘要

3-Hydroxy-1-phenyl-2-pyrazolin-5-one 1 reacts with primary, secondary and allylic alcohols under catalytic acidic conditions and in the presence of 3 Angstrom molecular sieves, to afford 3-alkoxy-1-phenyl-2-pyrazolin-5-ones 3. [References: 12]