<i>O</i>-Alkylation of 3-hydroxy-1-phenyl-2-pyrazolin-5-one
作者:Aurora Molinari、Alfonso Oliva
DOI:10.1002/jhet.5570330242
日期:1996.3
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 Å molecular sieves, to afford 3-alkoxy-1-phenyl-2-pyrazolin-5-ones 3.