Patent ID: 6344583
Filing Date: 2002-02-05
Classification: C07D

Abstract:
A process for the oxidation of a ketone to an ester comprising contacting a ketone with hydrogen peroxide and a catalyst at oxidation conditions to provide the corresponding ester, the catalyst comprising a molecular sieve having an empirical formula on a calcined and anhydrous basis of:(MwSnxTiySi1âˆ’xâˆ’yâˆ’zGez)O2 where M is a metal having a +3 valence, â€œwâ€  is the mole fraction of M and varies from 0 to about 2x, â€œxâ€  is the mole fraction of tin and varies from about 0.001 to about 0.1, â€œyâ€  is the mole fraction of titanium and varies from zero to about 0.1 and â€œzâ€  is the mole fraction of germanium and varies from zero to less than about 0.08 and characterized in that the composition has the characteristic x-ray diffraction pattern of zeolite beta and when â€œwâ€ , â€œyâ€  and â€œzâ€  are all zero, then the molecular sieve is amorphous with short range order or has the characteristic x-ray diffraction pattern of zeolite beta.