Patent ID: 7161022
Filing Date: 2007-01-09
Classification: C07C,C07D

Abstract:
1. A process for producing a 4-phenyl-4-oxo-2-butenoate derivative represented by the following general formula (III) or (IV), which comprises simultaneously or continuously reacting an aromatic hydrocarbon represented by the following general formula (I) and a maleic anhydride derivative represented by the following general formula (II) in the presence of an acid catalyst and an alkylating agent wherein the alkylating agent is a sulfuric ester wherein R1 to R5 each independently represents a hydrogen atom, an electron-donating group, or an electron-withdrawing group, and adjacent groups of R1 to R5 may be combined to form a ring; wherein R6 or R7 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, an alkoxy group, an aryloxy group, a carbonyl group, a sulfonyl group, a carbonyloxy group, a carbonylamino group, a sulfonylamino group, an amino group, a cyano group, an alkylthio group, an arylthio group, a heterocyclic residual group, or a halogen atom, and R6 and R7 may be combined to form a partially saturated ring, an aromatic ring, or a heterocyle; wherein R1 to R7 have the same meanings as above and R8 represents an alkyl group.