Patent ID: 6384287
Filing Date: 2002-05-07
Classification: C07C,C08F

Abstract:
A process for the preparation of a peroxide having the formula (I), wherein n=1 or 2, R1, R2, R4, R5, and R6 are independently selected from the group consisting of hydrogen, C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 aralkyl, and C7-C20 alkaryl, or R1 and R2 form a C3-C12 cycloalkyl group, which groups may include linear or branched alkyl moieties; and each of R1, R2, R4, R5, and R6, may optionally be substituted with one or more groups selected from hydroxy, alkoxy, linear or branched alkyl, aryloxy, halogen, ester, carboxy, nitrile, and amido, and R1 and R2, may form a ring, and R3 is independently selected from the group consisting of C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 aralkyl, and C7-C20 alkaryl, which groups may include linear or branched alkyl moieties, and R3 may optionally be substituted with one or more groups selected from hydroxy, alkoxy, linear or branched alkyl, aryloxy, halogen, ester, carboxy, nitrile, and amido, and any pair of the optionally substituted R3, R4, R5, and R6, may form a ring, comprising the reaction of the corresponding ketone peroxide with the formula (II) â€ƒwherein n, R1, and R2 have the identified meaning, with an alkyl vinyl ether with the formula (IIIa) or with an acetal with the formula (IIIb) wherein R3, R4, R5, and R6, in the presence of a catalyst.